CVE tracker / CVE-2026-69676

CVE-2026-69676

CVE-2026-69676 is the Windows Kerberos Remote Code Execution Vulnerability. Microsoft rates it Critical, CVSS 8.8. It is not in CISA's Known Exploited Vulnerabilities catalog. Published September 8, 2026.

Risk summary

HighRemote Code Execution
8.8
CVSS v3 base
0.8%
EPSS: chance of exploitation in 30 days
High
Severity
Critical
Microsoft's rating
More Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Authentication bypass by capture-replay in Windows Kerberos allows an authorized attacker to execute code over a network.”

How to fix it

Microsoft lists 30 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-294: Authentication Bypass by Capture-replay
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
September 8, 2026
Last revised
October 14, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.