CVE tracker / CVE-2026-119855

CVE-2026-119855

CVE-2026-119855 is the Windows COM+ Event System Service Information Disclosure Vulnerability. Microsoft rates it Important, CVSS 5.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published November 10, 2026.

Risk summary

MediumInformation Disclosure
5.5
CVSS v3 base
Medium
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Buffer over-read in Windows COM+ Event System Service allows an authorized attacker to disclose information locally.”

How to fix it

Microsoft lists 24 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-126: Buffer Over-read
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.