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CVE-2015-2546 is a local privilege escalation vulnerability in the Win32k kernel-mode component of Microsoft Windows, affecting multiple supported Windows client and server releases at the time of disclosure. The flaw is described as a memory corruption issue and is specifically characterized as a classic use-after-free condition in the Win32k subsystem, with reporting that exploitation involved the User Mode Callback mechanism and the xxxSendMessage path associated with popup-menu handling. A local attacker can trigger the vulnerable state from a crafted application and leverage the resulting dangling pointer condition to corrupt kernel memory and execute attacker-controlled code in kernel context. In observed attack chains, the vulnerability was used after initial user-mode code execution to elevate privileges to SYSTEM.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows kernel local privilege escalation vulnerability caused by a use-after-free in xxxSendMessage/tagPOPUPMENU.
A kernel-mode use-after-free vulnerability used for privilege escalation to SYSTEM after initial compromise via Microsoft Word.
An APT-used zero-day vulnerability referenced as part of an exploit chain involving PostScript-embedded Microsoft Office documents and Win32k/User Mode Callback privilege escalation.
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.