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Vulnerability Intelligence

CVE-2026-21249 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-21249

CVE-2026-21249

LOW3.3

Windows NTLM Spoofing Vulnerability

Published Feb 10, 2026

Modified 5 days ago

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21249

https://www.cve.org/CVERecord?id=CVE-2026-21249

CVSS Analysis

CVSS v3.1

3.3

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

LowC:L

Integrity

NoneI:N

Availability

NoneA:N

3.3/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

Weakness Type (CWE)

Input Validation

External Control of File Name

Ecosystems

Timeline

PublishedFeb 10, 2026

ModifiedFeb 27, 2026