Patch tracker / KB5002754

KB5002754: Microsoft SharePoint Server 2019 Security Update (July 2025)

KB5002754 is a Critical security update for Microsoft SharePoint Server 2019, released 2025-07-08. It closes 2 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV) and linked to ransomware, so this is a deploy-first update. The most likely of them to be attacked is CVE-2025-53771, which FIRST.org rates at 100% probability of exploitation in the next 30 days.

Update summary

CriticalCISA KEVRansomware
2025-07-08
Released
2
CVEs fixed
9.8
Max CVSS
Critical
Severity
Deploy immediately
This update fixes vulnerabilities confirmed exploited in the wild, including ransomware-linked CVEs.

Fixes 2 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 100%. One is linked to ransomware. Among the top 5% of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for Microsoft SharePoint Enterprise Server 2016 has shipped since this one: KB5002882 (2026-08-11). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.

Senserva found thisread these before you deploy broadly

Microsoft documents 1 known issue with this update.

  • Users may experience an issue when loading some SharePoint page resources, and the following error message is logged in the SharePoint Unified...

The full text, quoted from Microsoft

Microsoft Update Catalog: download KB5002754Microsoft support article
Senserva AI Opinion for KB5002754

KB5002754 patches two SharePoint on-premises flaws, including CVE-2025-53770, that carry a Critical CVSS 9.8 rating, sit at 100 percent EPSS, and are already in CISA KEV with confirmed ransomware use. Anyone running SharePoint Enterprise Server 2016, Server 2019, or Subscription Edition on-premises is exposed, and these are the ToolShell chain vulnerabilities being actively exploited to breach SharePoint farms. This is not a wait-and-test situation because working exploitation is public and tied to ransomware operators.

Do this: Apply KB5002754 to all on-premises SharePoint 2016, 2019, and Subscription Edition servers immediately, rotate ASP.NET machine keys, and hunt for signs of prior compromise.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5002754

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

Full tracking and change history for KB5002754

Released
2025-07-08
Last changed
2025-07-08
Changes tracked
1

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.

Check if KB5002754 is installed

Elevated PowerShell. No output means it is not installed.

Known issues, from Microsoft

Quoted from Microsoft's support article for KB5002754 (checked 2026-08-11). Verify against the article before acting.

Users may experience an issue when loading some SharePoint page resources, and the following error message is logged in the SharePoint Unified Logging System (ULS) logs:

Note

[SPRequestModule.PostAuthenticateRequestHandler] Risky signout bypass limited (Access Denied). request path: '<resource path>'.

To work around this issue, farm administrators can add the resource path in the AllowList by running the following PowerShell commands:

$farm = get-spfarm

​​​​​​​ $farm.AddGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")

$farm.Update()

iisreset

To check whether the resource path exists in the AllowList, run:

$farm.ContainsGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")

To remove the resource path from the AllowList, run:

$farm.RemoveGenericAllowedListValue("SignOutRefererAllowList", "<resource path>")

Note

Make sure that the resource path is valid and as expected before you follow the instructions to configure it.

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.

CVESeverityCVSSEPSSExploited
CVE-2025-53770Critical9.8100%KEV Ransomware
CVE-2025-53771Medium6.5100%No

Scope and sources

Affected products
Also released in July 2025

KB5002753

2 CVEs · Critical · exploited

KB5002759

2 CVEs · Critical · exploited

KB5002760

2 CVEs · Critical · exploited

KB5002768

2 CVEs · Critical · exploited

KB5002741

4 CVEs · High · exploited

KB5002744

4 CVEs · High · exploited

KB5002751

2 CVEs · High · exploited

KB5060118

39 CVEs · High · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002754 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

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

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.