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CVE-2026-26132 is a use-after-free vulnerability in the Windows Kernel that can be exploited by a local attacker to elevate privileges. The flaw arises from improper handling of object lifetime in kernel-mode code, creating a condition where freed memory can still be referenced. By triggering this stale reference in a controlled way, an attacker with local code execution can corrupt kernel memory and obtain execution in a more privileged security context. Microsoft rated the issue as Important and assessed exploitation as more likely.
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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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Kernel local elevation-of-privilege vulnerability flagged as 'Exploitation More Likely' by Microsoft.
A Windows kernel elevation-of-privilege vulnerability rated by Microsoft as more likely to be exploited (low complexity; no special privileges/user interaction).
A Windows Kernel use-after-free vulnerability that can be used for local privilege escalation (to SYSTEM/admin).
A Microsoft vulnerability rated 'more likely to be exploited' (type not specified in the content; mentioned in the context of privilege escalation defects).
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.