HIGH Published September 8, 2026

CVE-2026-68880

Heap-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges over a network.

CVSS base score

8.0 (v3.1)

Severity

HIGH

Attack vector

Network

Weakness

CWE-122, CWE-197

Last modified

October 30, 2026

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

microsoft windows 10 1607 microsoft windows 10 1809 microsoft windows 10 21h2 microsoft windows 10 22h2 microsoft windows 11 23h2 microsoft windows 11 24h2 microsoft windows 11 25h2 microsoft windows 11 26h1 microsoft windows server 2012 microsoft windows server 2016

References

msrc.microsoft.com Patch, Vendor Advisory

View full NVD advisory →

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CVE-2026-68880

Affected products

References

More microsoft vulnerabilities

Published the same day

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