CVE tracker / CVE-2026-119952

CVE-2026-119952

CVE-2026-119952 is the Windows Schannel Remote Code Execution Vulnerability. Microsoft rates it Critical, CVSS 8.1. It is not in CISA's Known Exploited Vulnerabilities catalog. Published November 10, 2026.

Risk summary

HighRemote Code Execution
8.1
CVSS v3 base
High
Severity
Critical
Microsoft's rating
More Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Observable timing discrepancy in Windows Schannel allows an unauthorized attacker to execute code over a network.”

How to fix it

Microsoft lists 28 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-208: Observable Timing Discrepancy
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
November 10, 2026
Last revised
November 10, 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.