PT-2025-4217 · Microsoft · Windows

Simon Zuckerbraun · Published 2025-01-14 · Updated 2025-01-21 · CVE-2025-21331

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

The Microsoft Windows Installer Service is affected by a local privilege escalation issue, which can be exploited by attackers to gain elevated privileges on a system. This issue is related to a link following flaw in the Windows Installer Service. The vulnerable software is Microsoft Windows. An exploit for this issue is potentially available. The impact of this issue could potentially affect a significant number of Internet users, given the widespread use of Microsoft Windows. More information about this issue can be found at https://t.co/gd9QZ65HVk and https://t.co/GLCFGSqGA8. #Microsoft #MicrosoftWindows #PrivilegeEscalation #WindowsInstaller #CyberSecurity #Windows #ElevationOfPrivilege #LocalPrivilegeEscalation

Fix

LPE

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2025-21331

ZDI-25-029

Affected Products

Windows

References · 9

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21331 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21331 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21331 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-21331 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-25-029 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-21331 · Security Note
• https://t.me/cvenotify/108121 · Telegram Post
• https://twitter.com/SystemTek_UK/status/1880173782230245881 · Twitter Post
• https://twitter.com/CVEnew/status/1879290761524527134 · Twitter Post