CVE-2026-21249

LOW

Windows NTLM - Path Traversal

Title source: llm

Description

External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.

References (1)

Scores

CVSS v3 3.3
EPSS 0.0004
EPSS Percentile 13.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Classification

CWE
CWE-73
Status published

Affected Products (22)

microsoft/windows_10_1607 < 10.0.14393.8868
microsoft/windows_10_1607 < 10.0.14393.8868
microsoft/windows_10_1809 < 10.0.17763.8389
microsoft/windows_10_1809 < 10.0.17763.8389
microsoft/windows_10_21h2 < 10.0.19044.6937
microsoft/windows_10_21h2 < 10.0.19044.6937
microsoft/windows_10_21h2 < 10.0.19044.6937
microsoft/windows_10_22h2 < 10.0.19045.6937
microsoft/windows_10_22h2 < 10.0.19045.6937
microsoft/windows_10_22h2 < 10.0.19045.6937
microsoft/windows_11_23h2 < 10.0.22631.6649
microsoft/windows_11_23h2 < 10.0.22631.6649
microsoft/windows_11_24h2 < 10.0.26100.7781
microsoft/windows_11_24h2 < 10.0.26100.7781
microsoft/windows_11_25h2 < 10.0.26200.7781
... and 7 more

Timeline

Published Feb 10, 2026
Tracked Since Feb 18, 2026