CVE tracker / CVE-2026-69744
CVE-2026-69744
CVE-2026-69744 is the Windows Kerberos Denial of Service Vulnerability. Microsoft rates it Important, CVSS 7.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published September 8, 2026.
Risk summary
HighDenial of Service
7.5
CVSS v3 base
1.2%
EPSS: chance of exploitation in 30 days
High
Severity
Important
Microsoft's rating
Unlikely
Microsoft: exploitation
No
In CISA KEV
Microsoft describes it: “Null pointer dereference in Windows Kerberos allows an unauthorized attacker to deny service over a network.”
How to fix it
Microsoft lists 6 affected products and the update that fixes each:
- KB5122871 · fixed build 10.0.26100.33438
Windows Server 2025, Windows Server 2025 (Server Core installation) - KB5124008 · fixed build 10.0.26100.9445, 10.0.26200.9445
Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems
What Microsoft changed
- September 8, 2026: Information published.
Details
- Weakness
- CWE-476: NULL Pointer Dereference
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- September 8, 2026
- Last revised
- September 8, 2026
Get told when this changes
Senserva Watch emails Microsoft security and patch alerts when something moves: a new exploitation report, a revised fix, a known issue. Free, one email address.
References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.