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CVE-2026-27908 is an elevation-of-privilege vulnerability in the Windows TDI Translation Driver, tdx.sys. The flaw is a use-after-free condition in kernel-mode code that can be triggered by a locally authorized attacker. Successful exploitation requires winning a race condition, indicating a timing-sensitive path in which freed memory can be reused in a way that leads to unintended kernel behavior. Microsoft classifies the issue as Important and notes that exploitation is considered more likely. The vulnerability enables escalation from a low-privileged local context to SYSTEM.
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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.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An elevation-of-privilege vulnerability in the Windows TDI Translation Driver (tdx.sys) caused by a use-after-free flaw.
A Windows TDI Translation Driver (tdx.sys) elevation of privilege vulnerability.
A local elevation of privilege vulnerability in the Windows TDI Translation Driver (tdx.sys) caused by a use-after-free condition. Successful exploitation can allow an authorized attacker to gain SYSTEM privileges.
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.