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A local privilege escalation vulnerability in the Windows kernel-mode graphics subsystem affects win32k.sys on multiple Microsoft Windows versions including Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, Windows 8, and Windows Server 2012. The flaw is in EPATHOBJ::pprFlattenRec, which does not properly initialize a pointer to the next object in an internal list. By forcing excessive paged-memory consumption and repeatedly invoking FlattenPath, a local attacker can corrupt or gain write access to the PATHRECORD chain. This memory corruption condition can then be leveraged to modify kernel-managed structures and elevate privileges. The issue has also been referred to as the Win32k Read AV Vulnerability.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (3 hidden).
This repository contains a single Metasploit module (modules/exploits/windows/local/ppr_flatten_rec.rb) that exploits a local privilege escalation vulnerability (CVE-2013-3660) in the Windows kernel (win32k.sys) EPATHOBJ::pprFlattenRec function. The exploit targets Windows XP SP3, Windows 2003 SP1, and Windows 7 SP1 on x86 architecture. The module checks the version of win32k.sys to determine if the target is vulnerable, and if so, uses Reflective DLL Injection to execute a payload (typically a Meterpreter shell) as SYSTEM. The exploit requires an existing Meterpreter session on the target. The structure is typical for a Metasploit local exploit module, with clear separation of initialization, vulnerability checking, and exploitation logic. The only fingerprintable endpoints are the system file win32k.sys (used for version checking) and the DLL payload used for injection.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows local privilege escalation vulnerability caused by an uninitialized kernel pointer in EPATHOBJ::pprFlattenRec, implemented by PlayBit and used by crimeware.
A Windows local privilege escalation vulnerability mentioned only in a list of PlayBit-developed 1-day exploits.
A Windows privilege escalation / UAC bypass vulnerability used by the Blackbeard malware to obtain administrator privileges from a standard user context.
Windows local privilege escalation vulnerability targeted by FIN6 tooling to obtain kernel-level privileges.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.