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CVE-2026-40144 is a high-severity memory-corruption vulnerability in a kernel-mode component of BeyondTrust Endpoint Privilege Management for Windows deployments prior to version 26.1.2. The flaw is caused by insufficient validation of input handled by the affected kernel component, allowing memory to be accessed outside its intended bounds. Although classified as an out-of-bounds read, successful exploitation can lead to kernel memory corruption and arbitrary code execution in kernel mode. Because the vulnerable code executes in the Windows kernel security context, exploitation can compromise core operating system trust boundaries on the affected endpoint.
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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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.