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Vulnerability · Published Aug 11, 2026 · Assigned by intel

CVE-2025-31938

Medium 4.3

In plain English

A medium-severity security flaw in Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)4.3Medium
Exploit odds (30 days)<0.1%top 99.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Insufficient granularity of access control in some subsystem for some Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12intel-microcodeno fix listedDEBIAN-CVE-2025-31938
Debian:13intel-microcodeno fix listedDEBIAN-CVE-2025-31938
Debian:14intel-microcode3.20260925.1DEBIAN-CVE-2025-31938
Ubuntu:22.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2025-31938
Ubuntu:24.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2025-31938
Ubuntu:26.04:LTSintel-microcodeno fix listedUBUNTU-CVE-2025-31938
Ubuntu:26.10intel-microcodeno fix listedUBUNTU-CVE-2025-31938

Affected products (as reported)

VendorProductVersions
n/a Intel(R) Xeon(R) 6 Scalable processors with Intel(R) TDX may allow an information disclosure. Authorized adversary with an authenticated user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts. See references

Weakness: CWE-1220 · Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

References