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CVE-2017-0263 is a use-after-free vulnerability in the Windows kernel-mode Win32k function xxxDestroyWindow that allows a local user to elevate privileges through a crafted application. Affected platforms include Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 and 2012 R2, Windows RT 8.1, Windows 10 initial release and versions 1511, 1607, and 1703, and Windows Server 2016. Observed exploitation obtains kernel window-object addresses through HMValidateHandle and replaces the current process token with the SYSTEM process token. APT28 exploited the vulnerability as a zero-day alongside the Microsoft Office EPS vulnerability CVE-2017-0262 to escape a sandbox and execute malware with elevated privileges.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced earlier Windows exploit used as historical comparison for shellcode-based exploitation approaches.
A vulnerability exploited by APT28 for privilege escalation.
A vulnerability exploited by APT28 to escalate privileges. The affected product and technical mechanism are not specified.
Listed as a vulnerability leveraged in an exploit chain to fully compromise targeted systems; no vulnerability-specific technical details are provided.
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.