Information disclosure via Ring 0 out-of-bounds read
Published Feb 10, 2026 · Updated Feb 10, 2026
An out-of-bounds read in Intel TDX Module before tdx1.5 allows local users with hypervisor privileges to disclose protected data. Intel identifies the flaw only within the Ring 0 hypervisor context and has not disclosed the affected function, buffer, or invalid bounds operation. Exploitation requires privileged local access, high complexity, an additional attack condition, and no user interaction; the reported consequence is confidentiality loss without data modification or service interruption.
Summary
What happened
An out-of-bounds read in Intel TDX Module before tdx1.5 allows local users with hypervisor privileges to disclose protected data. Intel identifies the flaw only within the Ring 0 hypervisor context and has not disclosed the affected function, buffer, or invalid bounds operation. Exploitation requires privileged local access, high complexity, an additional attack condition, and no user interaction; the reported consequence is confidentiality loss without data modification or service interruption.
The record
- CVE
- CVE-2025-27940
- Published
- Feb 10, 2026
- Updated
- Feb 10, 2026
- Vendor
- Topcon Positioning Systems, Inc.
- Product
- Intel TDX Module
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 10, 2026CVE publishedPublication date reported by the CVE source.
- Feb 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=before version tdx1.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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