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CVE-2013-3660: Microsoft Win32k Privilege Escalation Vulnerability

criticalknown exploitedpublic exploitCVE-2013-3660
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft does not properly initialize a pointer for the next object in a certain list, which allows local users to gain privileges.

CSIRTS triage

vendor: Microsoftproduct: WindowsPrivilege escalation
What
The EPATHOBJ::pprFlattenRec function in win32k.sys allows local users to gain privileges due to improper pointer initialization.
Who is affected
Local users of Microsoft Windows with vulnerable versions.
Urgency
Immediate action is required as this vulnerability is actively exploited and rated critical.
Action
Install the latest security update for Windows.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-28
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2013-3660

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2013-3660coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Win32k Privilege

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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