CVE tracker / CVE-2026-119867

CVE-2026-119867

CVE-2026-119867 is the Windows Installer Security Feature Bypass Vulnerability. Microsoft rates it Important, CVSS 5.3. It is not in CISA's Known Exploited Vulnerabilities catalog. Published November 10, 2026.

Risk summary

MediumSecurity Feature Bypass
5.3
CVSS v3 base
Medium
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Improper verification of cryptographic signature in Windows Installer allows an unauthorized attacker to bypass a security feature over a network.”

How to fix it

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

What Microsoft changed

Details

Weakness
CWE-347: Improper Verification of Cryptographic Signature
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.