Review reviewHigh

CVE-2026-42981

Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2

Integer underflow (wrap or wraparound) in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.64%

Technical severityCVSS 8.1

Integer underflow (wrap or wraparound) in Windows Performance Monitor allows an unauthorized attacker to execute code over a network.

Product: Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2
Affected versions: >= 10.0.22631.0 < 10.0.22631.7219, >= 10.0.26100.0 < 10.0.26100.8655, >= 10.0.26200.0 < 10.0.26200.8655, >= 10.0.28000.0 < 10.0.28000.2269, >= 10.0.20348.0 < 10.0.20348.5256, >= 10.0.26100.0 < 10.0.26100.32995, < 10.0.22631.7219, < 10.0.26100.8655, < 10.0.26200.8655, < 10.0.28000.2269, < 10.0.20348.5256, < 10.0.26100.32995
Fixed versions: 10.0.22631.7219, 10.0.26100.8655, 10.0.26200.8655, 10.0.28000.2269, 10.0.20348.5256, 10.0.26100.32995

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.