CVE-2013-3660

HIGH7.8

CISA KEV

Published 2013-05-24 · Updated 2026-06-16 · Source cve@mitre.org

Summary

CVE-2013-3660 is a high-severity (CVSS 7.8) vulnerability in Microsoft Win32k. CISA added it to the Known Exploited Vulnerabilities catalog on March 28, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 18, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

All 390 known-exploited Microsoft vulnerabilities →

Description

The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."

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

CWE-119CWE-119

CISA Known-Exploited Vulnerability

Product: Microsoft — Win32k

Name: Microsoft Win32k Privilege Escalation Vulnerability

Date added: 2022-03-28 · Due: 2022-04-18

Required action: Apply updates per vendor instructions.

References

View on NVD

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