Information disclosure in Microsoft Windows and Windows Server - CVE-2025-59284
Published: October 15, 2025 / Updated: March 13, 2026
Vulnerability identifier: #VU117235
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-59284
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to user's credentials can be leaked when parsing hard links inside .tar archives. A remote attacker can trick the victim into opening a specially crafted .tar archive and force the system to relay NTLM credentials via an outgoing SMB request.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2025-59284
Install updates from vendor's website.
Microsoft Windows - addressed in versions 10 1607 10.0.14393.8519, 11 22H2 10.0.22621.6060, 11 23H2 10.0.22631.6060, 11 24H2 10.0.26100.6899
Windows Server - addressed in versions 2012 R2 6.3.9600.22824, 2025 10.0.26100.6899
Windows Server - addressed in versions 2012 R2 6.3.9600.22824, 2025 10.0.26100.6899