MEDIUM Published October 13, 2026

CVE-2026-83649

Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.

CVSS base score

6.5 (v3.1)

Severity

MEDIUM

Attack vector

Network

Weakness

CWE-125

Last modified

October 29, 2026

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 11 26h2 microsoft windows server 2016

References

msrc.microsoft.com Vendor Advisory

View full NVD advisory →

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CVE-2026-83649

Affected products

References

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