CVE-2026-27921 (GCVE-0-2026-27921)
Vulnerability from cvelistv5 – Published: 2026-04-14 16:57 – Updated: 2026-04-15 10:33
VLAI?
Title
Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Severity ?
CWE
Assigner
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9060
(custom)
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Date Public ?
2026-04-14 14:00
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"shortName": "microsoft"
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"name": "Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability",
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27921"
}
],
"title": "Windows TDI Translation Driver (tdx.sys) Elevation of Privilege Vulnerability"
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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