Review reviewHigh

CVE-2026-54124

Microsoft Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 Version 24H2

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.43%

Technical severityCVSS 7.8

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code locally.

Product: Microsoft Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 Version 24H2
Affected versions: >= 10.0.19044.0 < 10.0.19044.7548, >= 10.0.19045.0 < 10.0.19045.7548, >= 10.0.26100.0 < 10.0.26100.8875, >= 10.0.26200.0 < 10.0.26200.8875, >= 10.0.28000.0 < 10.0.28000.2525, >= 10.0.20348.0 < 10.0.20348.5386, >= 10.0.26100.0 < 10.0.26100.33158, >= 1.0.0 < 1.24.11321.0, < 1.24.11321.0, < 10.0.19044.7548, < 10.0.19045.7548, < 10.0.26100.8875, < 10.0.26200.8875, < 10.0.28000.2269, < 10.0.28000.2525, < 10.0.20348.5386, < 10.0.26100.33158
Fixed versions: 1.24.11321.0, 10.0.19044.7548, 10.0.19045.7548, 10.0.26100.8875, 10.0.26200.8875, 10.0.28000.2269, 10.0.28000.2525, 10.0.20348.5386, 10.0.26100.33158

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 10 Version 21H2, Windows 10 Version 22H2, 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.