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CVE-2025-59284

MediumPublished

Windows NTLM Spoofing Vulnerability

Published: Oct 14, 2025
Updated: Feb 22, 2026
Assigning CNA: microsoft
Evidence observed: Aug 8, 2026

Primary CVSS

5.5/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 61.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing locally.

Sources

CVE-2025-59284-PoCPoC
Proof of concept for CVE-2025-59284 libarchive exploit

Responsible use

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