Loading vulnerability…
CVE-2026-34347 is a local elevation-of-privilege vulnerability in the Windows Win32K GRFX graphics kernel subsystem caused by a use-after-free condition. A kernel-mode graphics object can be referenced after its backing memory has been freed, leaving a dangling pointer and creating the possibility of arbitrary kernel memory corruption. The flaw is exploitable by an authenticated local attacker with low privileges and does not require user interaction. Successful exploitation requires winning a race condition in the vulnerable object lifetime handling. If exploited, the vulnerability can be used to escalate from a standard user context to SYSTEM on affected Windows client and server systems.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation vulnerability in the Windows Win32K GRFX kernel graphics component caused by a use-after-free condition that can allow a low-privileged local user to gain SYSTEM privileges.
A Windows Win32k use-after-free elevation of privilege vulnerability in Win32K-GRFX that allows a locally authorized attacker to gain elevated privileges, potentially up to SYSTEM.
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.