Patch tracker / KB5122880

KB5122880: Windows 11 Version 23H2 Security Update (September 2026)

KB5122880 is a Critical security update for Windows 11 Version 23H2, released 2026-09-08. It closes 602 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. It is the sixth largest of the 69 updates Microsoft shipped that month, by CVEs closed.

Update summary

CriticalCISA KEV

2026-09-08

Released

602

CVEs fixed

9.8

Max CVSS v3

Critical

Severity

Deploy now

This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 602 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 2.8%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thisread these before you deploy broadly

Microsoft documents 4 known issues with this update.

USB Audio Class 1.0 devices with error Code 10 or no output
Host folder shares might be unavailable in Hyper-V-based Linux VMs
Remote Desktop Services might stop responding after September 2026 security update

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5122880 Microsoft support article

Senserva AI Opinion and rich prompt for KB5122880

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin triaging Microsoft updates. Facts for KB5122880 (source: https://senserva.com/kb/5122880.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- Update: KB5122880, Windows 11 Version 23H2, released 2026-09-08
- Severity: Critical; fixes 602 CVEs, max CVSS 9.8
- Actively exploited (CISA KEV): YES
- CVEs include: CVE-2026-50349, CVE-2026-56172, CVE-2026-56177, CVE-2026-62694, CVE-2026-62697, CVE-2026-62706, CVE-2026-62759, CVE-2026-62762 and 594 more
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5122880
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for KB5122880

Released: 2026-08-11
Last changed: 2026-09-26
Changes tracked: 6

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Senserva Watchevery change we have recorded for this one

What changed, and when

Microsoft revised KB5122880 on 2026-09-12: CVEs fixed 601 to 602.

2026-09-12 CVEs fixed 601 to 602

Recorded by Senserva on the dates shown, from the MSRC release feed. This is what moved and when, which neither the vendor advisory nor NVD publishes.

Check if KB5122880 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5122880 installed? (elevated PowerShell)
Get-HotFix -Id KB5122880 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5122880 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5122880 (checked 2026-10-12). Verify against the article before acting.

USB Audio Class 1.0 devices with error Code 10 or no output

Symptoms

After installing the September 8, 2026, Windows security update, some USB Audio Class 1.0 devices might fail to start or produce audio. Affected devices might experience one or more of the following symptoms:

The device displays an error in Device Manager: "This device cannot start (Code 10).”

No audio output.

Volume controls are unresponsive or remain at zero.

Sound settings are unresponsive or unavailable.

Some devices might function in standard stereo configurations but fail when using multichannel audio features, including 8-channel or 3D audio modes. Some customers have reported that they're able to restore audio in these cases by switching to 2-channel mode.

This issue is limited to USB Audio Class 1.0 devices.

Resolution

This issue is partially resolved in the out-of-band (OOB) update released on September 14, 2026. This OOB update resolves the symptoms experienced on devices using 8-channel or 3D audio modes. Microsoft is working to address the other symptoms and will provide more information when it is available.

IT administrators who need an immediate workaround for the symptoms not addressed yet by the OOB update should contact Microsoft Support for Business for assistance.

Host folder shares might be unavailable in Hyper-V-based Linux VMs

Symptoms

After installing the September 2026 security update KB5122880 , applications that use HCS-managed virtual machines might experience issues when sharing host folder with Linux VMs using Plan9. Affected virtual machines start normally, but folders shared from the Windows host using Plan9 do not appear or cannot be accessed in the guest environment.

Applications or sandbox environments that depend on these shared folders might display an error indicating that no Plan9 drive shares were mounted. Claude Cowork and the Windows Subsystem for Linux (WSL) are two of the applications affected by this issue. Standard Hyper-V virtual machines that do not use the Plan9 feature are not affected by this issue.

Next steps

Microsoft is working on a resolution and will update this documentation when more information is available.

Remote Desktop Services might stop responding after September 2026 security update

Symptoms

After installing the September 2026 Windows security update, some organizations might experience issues with Remote Desktop Services (RDS).

In some environments, RDS might become unstable, resulting in RDP connections failing after several minutes, sign-in issues, or servers hanging at "Please wait for the Remote Desktop ...

Windows release health for this update

From Microsoft's Windows release health for Windows 11, version 23H2, checked 2026-10-12. Microsoft's issue text is linked from each title.

Issues Microsoft traces to this update

USB audio devices might fail to start or produce no sound
Mitigated. Microsoft last updated it 2026-09-29 10:12 PT.
Remote Desktop Services might stop responding after Sept. 2026 security update
Resolved by KB5129242. Microsoft last updated it 2026-09-17 19:22 PT.
Host folder shares might be unavailable in Hyper-V-based Linux VMs
Resolved by KB5129242. Microsoft last updated it 2026-09-14 13:30 PT.

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVE	Severity	CVSS	EPSS	Exploited
CVE-2026-81963	High	7.8	2.8%	KEV
CVE-2026-62762	Critical	9.8	3.6%	No
CVE-2026-62801	Critical	9.8	3.6%	No
CVE-2026-68830	Critical	9.8	3.6%	No
CVE-2026-68831	Critical	9.8	3.6%	No
CVE-2026-68833	Critical	9.8	3.6%	No
CVE-2026-68839	Critical	9.8	3.6%	No
CVE-2026-68843	Critical	9.8	3.6%	No
CVE-2026-68849	Critical	9.8	3.6%	No
CVE-2026-68851	Critical	9.8	3.6%	No
CVE-2026-68852	Critical	9.8	3.6%	No
CVE-2026-68873	Critical	9.8	2.8%	No
CVE-2026-68874	Critical	9.8	3.6%	No
CVE-2026-68881	Critical	9.8	3.6%	No
CVE-2026-68886	Critical	9.8	3.6%	No
CVE-2026-68891	Critical	9.8	3.6%	No
CVE-2026-68895	Critical	9.8	3.6%	No
CVE-2026-68898	Critical	9.8	3.6%	No
CVE-2026-69267	Critical	9.8	3.6%	No
CVE-2026-69276	Critical	9.8	3.6%	No
CVE-2026-69286	Critical	9.8	3.6%	No
CVE-2026-69288	Critical	9.8	3.6%	No
CVE-2026-69294	Critical	9.8	3.6%	No
CVE-2026-69303	Critical	9.8	3.6%	No
CVE-2026-69308	Critical	9.8	3.6%	No
CVE-2026-69315	Critical	9.8	3.6%	No
CVE-2026-69316	Critical	9.8	3.6%	No
CVE-2026-69317	Critical	9.8	3.6%	No
CVE-2026-69318	Critical	9.8	3.6%	No
CVE-2026-69321	Critical	9.8	3.6%	No
CVE-2026-69343	Critical	9.8	3.6%	No
CVE-2026-69344	Critical	9.8	3.6%	No
CVE-2026-69345	Critical	9.8	3.6%	No
CVE-2026-69349	Critical	9.8	3.6%	No
CVE-2026-69350	Critical	9.8	3.6%	No
CVE-2026-69351	Critical	9.8	3.6%	No
CVE-2026-69353	Critical	9.8	3.6%	No
CVE-2026-69367	Critical	9.8	3.6%	No
CVE-2026-69373	Critical	9.8	3.6%	No
CVE-2026-69374	Critical	9.8	3.6%	No
CVE-2026-69376	Critical	9.8	3.6%	No
CVE-2026-69381	Critical	9.8	3.6%	No
CVE-2026-69390	Critical	9.8	3.6%	No
CVE-2026-69393	Critical	9.8	3.6%	No
CVE-2026-69403	Critical	9.8	3.6%	No
CVE-2026-69406	Critical	9.8	3.6%	No
CVE-2026-69408	Critical	9.8	3.6%	No
CVE-2026-69425	Critical	9.8	2.8%	No
CVE-2026-69431	Critical	9.8	3.6%	No
CVE-2026-69449	Critical	9.8	3.6%	No
CVE-2026-69453	Critical	9.8	3.6%	No
CVE-2026-69457	Critical	9.8	3.6%	No
CVE-2026-69463	Critical	9.8	3.6%	No
CVE-2026-69469	Critical	9.8	3.6%	No
CVE-2026-69474	Critical	9.8	3.6%	No
CVE-2026-69483	Critical	9.8	3.6%	No
CVE-2026-69490	Critical	9.8	3.6%	No
CVE-2026-69491	Critical	9.8	3.6%	No
CVE-2026-69493	Critical	9.8	3.6%	No
CVE-2026-69496	Critical	9.8	3.6%	No
CVE-2026-69504	Critical	9.8	3.6%	No
CVE-2026-69507	Critical	9.8	3.6%	No
CVE-2026-69525	Critical	9.8	3.6%	No
CVE-2026-69527	Critical	9.8	3.6%	No
CVE-2026-69531	Critical	9.8	3.6%	No
CVE-2026-69548	Critical	9.8	3.6%	No
CVE-2026-69552	Critical	9.8	3.6%	No
CVE-2026-69554	Critical	9.8	3.6%	No
CVE-2026-69566	Critical	9.8	3.6%	No
CVE-2026-69568	Critical	9.8	3.6%	No
CVE-2026-69569	Critical	9.8	3.6%	No
CVE-2026-69572	Critical	9.8	3.6%	No
CVE-2026-69579	Critical	9.8	3.6%	No
CVE-2026-69586	Critical	9.8	3.6%	No
CVE-2026-69590	Critical	9.8	3.6%	No
CVE-2026-69591	Critical	9.8	3.6%	No
CVE-2026-69609	Critical	9.8	3.6%	No
CVE-2026-69616	Critical	9.8	3.6%	No
CVE-2026-69618	Critical	9.8	3.6%	No
CVE-2026-69627	Critical	9.8	3.6%	No
CVE-2026-69674	Critical	9.8	3.6%	No
CVE-2026-69684	Critical	9.8	3.6%	No
CVE-2026-69713	Critical	9.8	3.6%	No
CVE-2026-69715	Critical	9.8	3.6%	No
CVE-2026-69723	Critical	9.8	3.6%	No
CVE-2026-69741	Critical	9.8	3.6%	No
CVE-2026-69768	Critical	9.8	3.6%	No
CVE-2026-69769	Critical	9.8	3.6%	No
CVE-2026-69770	Critical	9.8	3.6%	No
CVE-2026-69771	Critical	9.8	2.8%	No
CVE-2026-69792	Critical	9.8	3.6%	No
CVE-2026-69794	Critical	9.8	3.6%	No
CVE-2026-69808	Critical	9.8	3.6%	No
CVE-2026-69819	Critical	9.8	3.6%	No
CVE-2026-69824	Critical	9.8	3.6%	No
CVE-2026-69829	Critical	9.8	3.6%	No
CVE-2026-69832	Critical	9.8	3.6%	No
CVE-2026-69853	Critical	9.8	3.6%	No
CVE-2026-69862	Critical	9.8	3.6%	No
CVE-2026-69895	Critical	9.8	3.6%	No
CVE-2026-69910	Critical	9.8	3.6%	No
CVE-2026-70019	Critical	9.8	2.8%	No
CVE-2026-70145	Critical	9.8	3.6%	No
CVE-2026-70290	Critical	9.8	3.6%	No
CVE-2026-70296	Critical	9.8	3.6%	No
CVE-2026-70575	Critical	9.8	3.6%	No
CVE-2026-70582	Critical	9.8	3.6%	No
CVE-2026-71329	Critical	9.8	3.6%	No
CVE-2026-71339	Critical	9.8	3.6%	No
CVE-2026-71341	Critical	9.8	3.6%	No
CVE-2026-71348	Critical	9.8	3.6%	No
CVE-2026-71349	Critical	9.8	3.6%	No
CVE-2026-71350	Critical	9.8	3.6%	No
CVE-2026-72927	Critical	9.8	3.6%	No
CVE-2026-72931	Critical	9.8	3.6%	No
CVE-2026-72935	Critical	9.8	3.6%	No
CVE-2026-72937	Critical	9.8	3.6%	No
CVE-2026-72939	Critical	9.8	3.6%	No
CVE-2026-72942	Critical	9.8	3.6%	No
CVE-2026-72945	Critical	9.8	3.6%	No
CVE-2026-72947	Critical	9.8	3.6%	No
CVE-2026-72964	Critical	9.8	3.6%	No
CVE-2026-72966	Critical	9.8	3.6%	No
CVE-2026-72980	Critical	9.8	3.6%	No
CVE-2026-72982	Critical	9.8	3.6%	No
CVE-2026-72983	Critical	9.8	3.6%	No
CVE-2026-72985	Critical	9.8	3.6%	No
CVE-2026-72999	Critical	9.8	3.6%	No
CVE-2026-73004	Critical	9.8	3.6%	No
CVE-2026-73008	Critical	9.8	3.6%	No
CVE-2026-73009	Critical	9.8	3.6%	No
CVE-2026-73019	Critical	9.8	3.6%	No
CVE-2026-77491	Critical	9.8	3.6%	No
CVE-2026-77492	Critical	9.8	3.6%	No
CVE-2026-77493	Critical	9.8	3.6%	No
CVE-2026-77892	Critical	9.8	3.6%	No
CVE-2026-77896	Critical	9.8	3.6%	No
CVE-2026-78451	Critical	9.8	3.6%	No
CVE-2026-78452	Critical	9.8	3.6%	No
CVE-2026-78453	Critical	9.8	3.6%	No
CVE-2026-78454	Critical	9.8	3.6%	No
CVE-2026-78455	Critical	9.8	3.6%	No
CVE-2026-78508	Critical	9.8	3.6%	No
CVE-2026-78516	Critical	9.8	3.6%	No
CVE-2026-83501	Critical	9.8	2.8%	No
CVE-2026-83991	Critical	9.8	3.6%	No
CVE-2026-62706	High	8.8	3.6%	No
CVE-2026-68828	High	8.8	3.6%	No
CVE-2026-69291	High	8.8	3.6%	No
CVE-2026-69334	High	8.8	3.6%	No
CVE-2026-69360	High	8.8	3.6%	No
CVE-2026-69386	High	8.8	3.6%	No
CVE-2026-69434	High	8.8	3.6%	No
CVE-2026-69461	High	8.8	3.6%	No
CVE-2026-69485	High	8.8	3.6%	No
CVE-2026-69494	High	8.8	3.6%	No
CVE-2026-69495	High	8.8	3.6%	No
CVE-2026-69499	High	8.8	3.6%	No
CVE-2026-69511	High	8.8	3.6%	No
CVE-2026-69518	High	8.8	3.6%	No
CVE-2026-69598	High	8.8	3.6%	No
CVE-2026-69601	High	8.8	3.6%	No
CVE-2026-69603	High	8.8	3.6%	No
CVE-2026-69628	High	8.8	3.6%	No
CVE-2026-69669	High	8.8	3.6%	No
CVE-2026-69676	High	8.8	3.6%	No
CVE-2026-69740	High	8.8	2.8%	No
CVE-2026-69772	High	8.8	3.6%	No
CVE-2026-69784	High	8.8	3.6%	No
CVE-2026-69860	High	8.8	3.6%	No
CVE-2026-70203	High	8.8	3.6%	No
CVE-2026-70586	High	8.8	3.6%	No
CVE-2026-71352	High	8.8	3.6%	No
CVE-2026-72933	High	8.8	3.6%	No
CVE-2026-72940	High	8.8	3.6%	No
CVE-2026-72950	High	8.8	3.6%	No
CVE-2026-72959	High	8.8	3.6%	No
CVE-2026-72960	High	8.8	3.6%	No
CVE-2026-72986	High	8.8	3.6%	No
CVE-2026-73006	High	8.8	3.6%	No
CVE-2026-73012	High	8.8	3.6%	No
CVE-2026-73013	High	8.8	3.6%	No
CVE-2026-73016	High	8.8	3.6%	No
CVE-2026-73018	High	8.8	3.6%	No
CVE-2026-73023	High	8.8	3.6%	No
CVE-2026-77495	High	8.8	3.6%	No
CVE-2026-77504	High	8.8	3.6%	No
CVE-2026-80083	High	8.8	3.6%	No
CVE-2026-80096	High	8.8	3.6%	No
CVE-2026-81955	High	8.8	3.6%	No
CVE-2026-83992	High	8.8	3.6%	No
CVE-2026-83996	High	8.8	3.6%	No
CVE-2026-83998	High	8.8	3.6%	No
CVE-2026-69479	High	8.4	3.6%	No
CVE-2026-69638	High	8.4	3.6%	No
CVE-2026-77503	High	8.4	3.6%	No
CVE-2026-69820	High	8.2	3.6%	No
CVE-2026-69846	High	8.2	3.6%	No
CVE-2026-69874	High	8.2	3.6%	No
CVE-2026-69906	High	8.2	3.6%	No
CVE-2026-72961	High	8.2	3.6%	No
CVE-2026-72962	High	8.2	3.6%	No
CVE-2026-81354	High	8.2	3.6%	No
CVE-2026-69325	High	8.1	3.6%	No
CVE-2026-69438	High	8.1	3.6%	No
CVE-2026-69524	High	8.1	3.6%	No
CVE-2026-69546	High	8.1	3.6%	No
CVE-2026-69732	High	8.1	3.6%	No
CVE-2026-69786	High	8.1	3.6%	No
CVE-2026-70342	High	8.1	3.6%	No
CVE-2026-70563	High	8.1	3.6%	No
CVE-2026-72936	High	8.1	3.6%	No
CVE-2026-72981	High	8.1	3.6%	No
CVE-2026-78449	High	8.1	3.6%	No
CVE-2026-83997	High	8.1	3.6%	No
CVE-2026-68827	High	8.0	3.6%	No
CVE-2026-68834	High	8.0	3.6%	No
CVE-2026-68838	High	8.0	3.6%	No
CVE-2026-68876	High	8.0	3.6%	No
CVE-2026-68878	High	8.0	3.6%	No
CVE-2026-68880	High	8.0	3.6%	No
CVE-2026-68894	High	8.0	3.6%	No
CVE-2026-69271	High	8.0	3.6%	No
CVE-2026-69301	High	8.0	3.6%	No
CVE-2026-69322	High	8.0	3.6%	No
CVE-2026-69332	High	8.0	3.6%	No
CVE-2026-69346	High	8.0	3.6%	No
CVE-2026-69365	High	8.0	3.6%	No
CVE-2026-69371	High	8.0	3.6%	No
CVE-2026-69418	High	8.0	3.6%	No
CVE-2026-69423	High	8.0	3.6%	No
CVE-2026-69427	High	8.0	3.6%	No
CVE-2026-69458	High	8.0	3.6%	No
CVE-2026-69462	High	8.0	3.6%	No
CVE-2026-69481	High	8.0	3.6%	No
CVE-2026-69503	High	8.0	3.6%	No
CVE-2026-69505	High	8.0	3.6%	No
CVE-2026-69512	High	8.0	3.6%	No
CVE-2026-69619	High	8.0	3.6%	No
CVE-2026-69623	High	8.0	3.6%	No
CVE-2026-69625	High	8.0	3.6%	No
CVE-2026-69643	High	8.0	3.6%	No
CVE-2026-69681	High	8.0	3.6%	No
CVE-2026-69689	High	8.0	3.6%	No
CVE-2026-69714	High	8.0	3.6%	No
CVE-2026-69717	High	8.0	3.6%	No
CVE-2026-69727	High	8.0	3.6%	No
CVE-2026-69762	High	8.0	3.6%	No
CVE-2026-69773	High	8.0	3.6%	No
CVE-2026-69807	High	8.0	3.6%	No
CVE-2026-69826	High	8.0	3.6%	No
CVE-2026-69847	High	8.0	3.6%	No
CVE-2026-69875	High	8.0	3.6%	No
CVE-2026-56172	High	7.8	3.6%	No
CVE-2026-56177	High	7.8	3.6%	No
CVE-2026-62697	High	7.8	3.6%	No
CVE-2026-62810	High	7.8	3.6%	No
CVE-2026-68832	High	7.8	3.6%	No
CVE-2026-68841	High	7.8	3.6%	No
CVE-2026-68844	High	7.8	3.6%	No
CVE-2026-68845	High	7.8	3.6%	No
CVE-2026-68848	High	7.8	3.6%	No
CVE-2026-68875	High	7.8	3.6%	No
CVE-2026-68877	High	7.8	3.6%	No
CVE-2026-68885	High	7.8	3.6%	No
CVE-2026-68888	High	7.8	3.6%	No
CVE-2026-68890	High	7.8	3.6%	No
CVE-2026-68892	High	7.8	3.6%	No
CVE-2026-68896	High	7.8	3.6%	No
CVE-2026-69265	High	7.8	3.6%	No
CVE-2026-69269	High	7.8	3.6%	No
CVE-2026-69270	High	7.8	3.6%	No
CVE-2026-69277	High	7.8	3.6%	No
CVE-2026-69283	High	7.8	3.6%	No
CVE-2026-69284	High	7.8	3.6%	No
CVE-2026-69289	High	7.8	3.6%	No
CVE-2026-69290	High	7.8	3.6%	No
CVE-2026-69293	High	7.8	3.6%	No
CVE-2026-69295	High	7.8	3.6%	No
CVE-2026-69298	High	7.8	3.6%	No
CVE-2026-69307	High	7.8	3.6%	No
CVE-2026-69312	High	7.8	3.6%	No
CVE-2026-69323	High	7.8	3.6%	No
CVE-2026-69324	High	7.8	3.6%	No
CVE-2026-69328	High	7.8	3.6%	No
CVE-2026-69352	High	7.8	3.6%	No
CVE-2026-69359	High	7.8	3.6%	No
CVE-2026-69368	High	7.8	3.6%	No
CVE-2026-69377	High	7.8	3.6%	No
CVE-2026-69389	High	7.8	3.6%	No
CVE-2026-69391	High	7.8	3.6%	No
CVE-2026-69392	High	7.8	2.8%	No
CVE-2026-69407	High	7.8	3.6%	No
CVE-2026-69420	High	7.8	3.6%	No
CVE-2026-69421	High	7.8	3.6%	No
CVE-2026-69424	High	7.8	3.6%	No
CVE-2026-69426	High	7.8	3.6%	No
CVE-2026-69432	High	7.8	3.6%	No
CVE-2026-69433	High	7.8	3.6%	No
CVE-2026-69436	High	7.8	3.6%	No
CVE-2026-69444	High	7.8	3.6%	No
CVE-2026-69445	High	7.8	3.6%	No
CVE-2026-69447	High	7.8	2.8%	No
CVE-2026-69450	High	7.8	3.6%	No
CVE-2026-69455	High	7.8	3.6%	No
CVE-2026-69456	High	7.8	3.6%	No
CVE-2026-69459	High	7.8	3.6%	No
CVE-2026-69467	High	7.8	3.6%	No
CVE-2026-69475	High	7.8	3.6%	No
CVE-2026-69476	High	7.8	3.6%	No
CVE-2026-69478	High	7.8	3.6%	No
CVE-2026-69480	High	7.8	3.6%	No
CVE-2026-69489	High	7.8	3.6%	No
CVE-2026-69509	High	7.8	3.6%	No
CVE-2026-69513	High	7.8	3.6%	No
CVE-2026-69528	High	7.8	2.8%	No
CVE-2026-69532	High	7.8	3.6%	No
CVE-2026-69534	High	7.8	3.6%	No
CVE-2026-69535	High	7.8	3.6%	No
CVE-2026-69538	High	7.8	3.6%	No
CVE-2026-69541	High	7.8	3.6%	No
CVE-2026-69561	High	7.8	3.6%	No
CVE-2026-69571	High	7.8	3.6%	No
CVE-2026-69576	High	7.8	3.6%	No
CVE-2026-69580	High	7.8	3.6%	No
CVE-2026-69582	High	7.8	3.6%	No
CVE-2026-69583	High	7.8	3.6%	No
CVE-2026-69584	High	7.8	3.6%	No
CVE-2026-69585	High	7.8	3.6%	No
CVE-2026-69589	High	7.8	3.6%	No
CVE-2026-69592	High	7.8	3.6%	No
CVE-2026-69593	High	7.8	3.6%	No
CVE-2026-69604	High	7.8	3.6%	No
CVE-2026-69608	High	7.8	3.6%	No
CVE-2026-69612	High	7.8	3.6%	No
CVE-2026-69685	High	7.8	3.6%	No
CVE-2026-69687	High	7.8	3.6%	No
CVE-2026-69691	High	7.8	3.6%	No
CVE-2026-69707	High	7.8	3.6%	No
CVE-2026-69709	High	7.8	3.6%	No
CVE-2026-69725	High	7.8	3.6%	No
CVE-2026-69731	High	7.8	3.6%	No
CVE-2026-69738	High	7.8	3.6%	No
CVE-2026-69758	High	7.8	3.6%	No
CVE-2026-69785	High	7.8	3.6%	No
CVE-2026-69787	High	7.8	3.6%	No
CVE-2026-69790	High	7.8	3.6%	No
CVE-2026-69799	High	7.8	3.6%	No
CVE-2026-69801	High	7.8	3.6%	No
CVE-2026-69822	High	7.8	3.6%	No
CVE-2026-69841	High	7.8	3.6%	No
CVE-2026-69844	High	7.8	3.6%	No
CVE-2026-69864	High	7.8	3.6%	No
CVE-2026-69900	High	7.8	3.6%	No
CVE-2026-69907	High	7.8	3.6%	No
CVE-2026-69921	High	7.8	3.6%	No
CVE-2026-70289	High	7.8	3.6%	No
CVE-2026-70564	High	7.8	3.6%	No
CVE-2026-70569	High	7.8	3.6%	No
CVE-2026-70572	High	7.8	3.6%	No
CVE-2026-70574	High	7.8	3.6%	No
CVE-2026-70581	High	7.8	3.6%	No
CVE-2026-70583	High	7.8	3.6%	No
CVE-2026-70584	High	7.8	3.6%	No
CVE-2026-71334	High	7.8	3.6%	No
CVE-2026-71337	High	7.8	3.6%	No
CVE-2026-71343	High	7.8	3.6%	No
CVE-2026-71345	High	7.8	3.6%	No
CVE-2026-72929	High	7.8	2.8%	No
CVE-2026-72941	High	7.8	3.6%	No
CVE-2026-72944	High	7.8	3.6%	No
CVE-2026-72953	High	7.8	3.6%	No
CVE-2026-72965	High	7.8	3.6%	No
CVE-2026-72967	High	7.8	3.6%	No
CVE-2026-72988	High	7.8	3.6%	No
CVE-2026-72990	High	7.8	3.6%	No
CVE-2026-72991	High	7.8	3.6%	No
CVE-2026-72992	High	7.8	3.6%	No
CVE-2026-72993	High	7.8	3.6%	No
CVE-2026-72994	High	7.8	3.6%	No
CVE-2026-72995	High	7.8	3.6%	No
CVE-2026-72996	High	7.8	3.6%	No
CVE-2026-72997	High	7.8	3.6%	No
CVE-2026-73000	High	7.8	3.6%	No
CVE-2026-73001	High	7.8	3.6%	No
CVE-2026-73002	High	7.8	3.6%	No
CVE-2026-73007	High	7.8	3.6%	No
CVE-2026-73011	High	7.8	3.6%	No
CVE-2026-73014	High	7.8	3.6%	No
CVE-2026-73015	High	7.8	3.6%	No
CVE-2026-73020	High	7.8	3.6%	No
CVE-2026-73021	High	7.8	3.6%	No
CVE-2026-73024	High	7.8	3.6%	No
CVE-2026-73026	High	7.8	3.6%	No
CVE-2026-77489	High	7.8	3.6%	No
CVE-2026-77500	High	7.8	3.6%	No
CVE-2026-77904	High	7.8	3.6%	No
CVE-2026-78447	High	7.8	3.6%	No
CVE-2026-78448	High	7.8	3.6%	No
CVE-2026-80075	High	7.8	3.6%	No
CVE-2026-83498	High	7.8	2.8%	No
CVE-2026-83942	High	7.8	3.6%	No
CVE-2026-83954	High	7.8	3.6%	No
CVE-2026-83955	High	7.8	3.6%	No
CVE-2026-83967	High	7.8	3.6%	No
CVE-2026-83968	High	7.8	3.6%	No
CVE-2026-83969	High	7.8	3.6%	No
CVE-2026-83970	High	7.8	3.6%	No
CVE-2026-83971	High	7.8	3.6%	No
CVE-2026-83972	High	7.8	3.6%	No
CVE-2026-83973	High	7.8	3.6%	No
CVE-2026-83974	High	7.8	3.6%	No
CVE-2026-83975	High	7.8	3.6%	No
CVE-2026-83976	High	7.8	3.6%	No
CVE-2026-83977	High	7.8	3.6%	No
CVE-2026-83978	High	7.8	3.6%	No
CVE-2026-83979	High	7.8	3.6%	No
CVE-2026-83980	High	7.8	3.6%	No
CVE-2026-83981	High	7.8	3.6%	No
CVE-2026-83982	High	7.8	3.6%	No
CVE-2026-83983	High	7.8	3.6%	No
CVE-2026-83985	High	7.8	3.6%	No
CVE-2026-83986	High	7.8	3.6%	No
CVE-2026-83987	High	7.8	3.6%	No
CVE-2026-83988	High	7.8	3.6%	No
CVE-2026-83990	High	7.8	3.6%	No
CVE-2026-83995	High	7.8	3.6%	No
CVE-2026-84000	High	7.8	3.6%	No
CVE-2026-62759	High	7.5	3.6%	No
CVE-2026-62813	High	7.5	3.6%	No
CVE-2026-68887	High	7.5	3.6%	No
CVE-2026-69329	High	7.5	3.6%	No
CVE-2026-69397	High	7.5	3.6%	No
CVE-2026-69428	High	7.5	3.6%	No
CVE-2026-69429	High	7.5	3.6%	No
CVE-2026-69514	High	7.5	3.6%	No
CVE-2026-69539	High	7.5	3.6%	No
CVE-2026-69587	High	7.5	3.6%	No
CVE-2026-69588	High	7.5	3.6%	No
CVE-2026-69599	High	7.5	2.8%	No
CVE-2026-69710	High	7.5	3.6%	No
CVE-2026-69760	High	7.5	3.6%	No
CVE-2026-69793	High	7.5	3.6%	No
CVE-2026-69809	High	7.5	3.6%	No
CVE-2026-69852	High	7.5	3.6%	No
CVE-2026-69881	High	7.5	3.6%	No
CVE-2026-69890	High	7.5	3.6%	No
CVE-2026-70570	High	7.5	3.6%	No
CVE-2026-70579	High	7.5	3.6%	No
CVE-2026-70587	High	7.5	3.6%	No
CVE-2026-71330	High	7.5	3.6%	No
CVE-2026-72932	High	7.5	3.6%	No
CVE-2026-72949	High	7.5	3.6%	No
CVE-2026-73017	High	7.5	3.6%	No
CVE-2026-78446	High	7.5	3.6%	No
CVE-2026-81355	High	7.5	3.6%	No
CVE-2026-83989	High	7.5	3.6%	No
CVE-2026-84001	High	7.5	3.6%	No
CVE-2026-69347	High	7.4	3.6%	No
CVE-2026-68835	High	7.1	3.6%	No
CVE-2026-68846	High	7.1	3.6%	No
CVE-2026-68889	High	7.1	3.6%	No
CVE-2026-69272	High	7.1	3.6%	No
CVE-2026-69274	High	7.1	3.6%	No
CVE-2026-69296	High	7.1	3.6%	No
CVE-2026-69305	High	7.1	3.6%	No
CVE-2026-69313	High	7.1	3.6%	No
CVE-2026-69314	High	7.1	3.6%	No
CVE-2026-69336	High	7.1	3.6%	No
CVE-2026-69337	High	7.1	3.6%	No
CVE-2026-69340	High	7.1	3.6%	No
CVE-2026-69357	High	7.1	3.6%	No
CVE-2026-69358	High	7.1	3.6%	No
CVE-2026-69364	High	7.1	3.6%	No
CVE-2026-69366	High	7.1	3.6%	No
CVE-2026-69384	High	7.1	3.6%	No
CVE-2026-69396	High	7.1	3.6%	No
CVE-2026-69451	High	7.1	3.6%	No
CVE-2026-69460	High	7.1	3.6%	No
CVE-2026-69482	High	7.1	3.6%	No
CVE-2026-69536	High	7.1	2.8%	No
CVE-2026-69553	High	7.1	3.6%	No
CVE-2026-69597	High	7.1	2.8%	No
CVE-2026-69602	High	7.1	3.6%	No
CVE-2026-69688	High	7.1	3.6%	No
CVE-2026-69706	High	7.1	3.6%	No
CVE-2026-69757	High	7.1	3.6%	No
CVE-2026-69761	High	7.1	3.6%	No
CVE-2026-69775	High	7.1	2.8%	No
CVE-2026-50349	High	7.0	3.6%	No
CVE-2026-62694	High	7.0	3.6%	No
CVE-2026-68824	High	7.0	3.6%	No
CVE-2026-68825	High	7.0	2.8%	No
CVE-2026-68837	High	7.0	3.6%	No
CVE-2026-68840	High	7.0	3.6%	No
CVE-2026-68847	High	7.0	3.6%	No
CVE-2026-68884	High	7.0	3.6%	No
CVE-2026-68897	High	7.0	3.6%	No
CVE-2026-69275	High	7.0	3.6%	No
CVE-2026-69279	High	7.0	3.6%	No
CVE-2026-69280	High	7.0	3.6%	No
CVE-2026-69281	High	7.0	3.6%	No
CVE-2026-69287	High	7.0	3.6%	No
CVE-2026-69299	High	7.0	3.6%	No
CVE-2026-69300	High	7.0	3.6%	No
CVE-2026-69309	High	7.0	3.6%	No
CVE-2026-69310	High	7.0	3.6%	No
CVE-2026-69311	High	7.0	3.6%	No
CVE-2026-69319	High	7.0	3.6%	No
CVE-2026-69331	High	7.0	3.6%	No
CVE-2026-69335	High	7.0	3.6%	No
CVE-2026-69341	High	7.0	3.6%	No
CVE-2026-69362	High	7.0	3.6%	No
CVE-2026-69379	High	7.0	2.8%	No
CVE-2026-69383	High	7.0	2.8%	No
CVE-2026-69385	High	7.0	3.6%	No
CVE-2026-69388	High	7.0	3.6%	No
CVE-2026-69394	High	7.0	3.6%	No
CVE-2026-69398	High	7.0	3.6%	No
CVE-2026-69404	High	7.0	3.6%	No
CVE-2026-69413	High	7.0	3.6%	No
CVE-2026-69430	High	7.0	3.6%	No
CVE-2026-69441	High	7.0	3.6%	No
CVE-2026-69448	High	7.0	3.6%	No
CVE-2026-69466	High	7.0	3.6%	No
CVE-2026-69468	High	7.0	3.6%	No
CVE-2026-69470	High	7.0	3.6%	No
CVE-2026-69472	High	7.0	3.6%	No
CVE-2026-69473	High	7.0	3.6%	No
CVE-2026-69488	High	7.0	3.6%	No
CVE-2026-69492	High	7.0	3.6%	No
CVE-2026-69498	High	7.0	3.6%	No
CVE-2026-69500	High	7.0	3.6%	No
CVE-2026-69501	High	7.0	3.6%	No
CVE-2026-69516	High	7.0	3.6%	No
CVE-2026-69517	High	7.0	3.6%	No
CVE-2026-69540	High	7.0	3.6%	No
CVE-2026-69549	High	7.0	3.6%	No
CVE-2026-69560	High	7.0	3.6%	No
CVE-2026-69563	High	7.0	3.6%	No
CVE-2026-69567	High	7.0	3.6%	No
CVE-2026-69573	High	7.0	3.6%	No
CVE-2026-69574	High	7.0	3.6%	No
CVE-2026-69575	High	7.0	3.6%	No
CVE-2026-69578	High	7.0	3.6%	No
CVE-2026-69581	High	7.0	3.6%	No
CVE-2026-69600	High	7.0	3.6%	No
CVE-2026-69605	High	7.0	3.6%	No
CVE-2026-69606	High	7.0	2.8%	No
CVE-2026-69610	High	7.0	3.6%	No
CVE-2026-69611	High	7.0	3.6%	No
CVE-2026-69613	High	7.0	3.6%	No
CVE-2026-69621	High	7.0	3.6%	No
CVE-2026-69630	High	7.0	3.6%	No
CVE-2026-69645	High	7.0	3.6%	No
CVE-2026-69648	High	7.0	3.6%	No
CVE-2026-69652	High	7.0	3.6%	No
CVE-2026-69654	High	7.0	3.6%	No
CVE-2026-69682	High	7.0	3.6%	No
CVE-2026-69692	High	7.0	3.6%	No
CVE-2026-69693	High	7.0	3.6%	No
CVE-2026-69694	High	7.0	3.6%	No
CVE-2026-69708	High	7.0	3.6%	No
CVE-2026-69711	High	7.0	3.6%	No
CVE-2026-69735	High	7.0	3.6%	No
CVE-2026-69779	High	7.0	3.6%	No
CVE-2026-69791	High	7.0	3.6%	No
CVE-2026-69814	High	7.0	2.8%	No
CVE-2026-69816	High	7.0	3.6%	No
CVE-2026-69817	High	7.0	3.6%	No
CVE-2026-69834	High	7.0	3.6%	No
CVE-2026-69838	High	7.0	3.6%	No
CVE-2026-69859	High	7.0	3.6%	No
CVE-2026-69866	High	7.0	3.6%	No
CVE-2026-69889	High	7.0	3.6%	No
CVE-2026-69891	High	7.0	3.6%	No
CVE-2026-69911	High	7.0	3.6%	No
CVE-2026-70283	High	7.0	3.6%	No
CVE-2026-70562	High	7.0	3.6%	No
CVE-2026-70565	High	7.0	3.6%	No
CVE-2026-70568	High	7.0	3.6%	No
CVE-2026-70573	High	7.0	3.6%	No
CVE-2026-70577	High	7.0	3.6%	No
CVE-2026-70578	High	7.0	3.6%	No
CVE-2026-71332	High	7.0	3.6%	No
CVE-2026-71333	High	7.0	3.6%	No
CVE-2026-71340	High	7.0	3.6%	No
CVE-2026-71342	High	7.0	3.6%	No
CVE-2026-71351	High	7.0	3.6%	No
CVE-2026-71353	High	7.0	3.6%	No
CVE-2026-72926	High	7.0	3.6%	No
CVE-2026-72930	High	7.0	3.6%	No
CVE-2026-72952	High	7.0	3.6%	No
CVE-2026-72963	High	7.0	3.6%	No
CVE-2026-73003	High	7.0	3.6%	No
CVE-2026-73005	High	7.0	3.6%	No
CVE-2026-73022	High	7.0	3.6%	No
CVE-2026-77894	High	7.0	3.6%	No
CVE-2026-77905	High	7.0	3.6%	No
CVE-2026-80093	High	7.0	3.6%	No
CVE-2026-83940	High	7.0	3.6%	No
CVE-2026-85360	High	7.0	3.6%	No

Scope and sources

Affected products

Also released in September 2026

Authoritative references

Official KB5122880 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

KB5122880: Windows 11 Version 23H2 Security Update (September 2026)

Update summary

Full tracking and change history for KB5122880

Check if KB5122880 is installed

Known issues, from Microsoft

Windows release health for this update

Issues Microsoft traces to this update

CVEs fixed by this update

Scope and sources

KB5122871

KB5122876

KB5122878

KB5122882

KB5123065

KB5123066

KB5123099

KB5124008