CVE-2025-31936
CVE-2025-31936 is a high-severity vulnerability with a CVSS 4.0 base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1260.
Key facts
- Severity: High (CVSS 4.0 base score 7.0)
- EPSS exploit prediction: 0% (1st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1260
- Published:
- Last modified:
Description
Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege. SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Frequently asked questions
- What is CVE-2025-31936?
- Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processors when using Intel(R) TDX within SMM may allow an escalation of privilege. SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
- How severe is CVE-2025-31936?
- CVE-2025-31936 has a CVSS 4.0 base score of 7.0, rated high severity.
- Is CVE-2025-31936 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-31936?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2025-31936 published?
- CVE-2025-31936 was published on 2026-08-11 and last updated on 2026-08-12.
References
Other CWE-1260 vulnerabilities
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- CVE-2025-22889 — High (CVSS 7.9): Improper handling of overlap between protected memory ranges for some Intel(R) Xeon(R) 6 processor with Intel(R) TDX…
- CVE-2019-1164 — High (CVSS 7.8): An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An…
- CVE-2025-1937 — High (CVSS 7.5): Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird…
- CVE-2026-20760 — Medium (CVSS 6.8): Improper handling of overlap between protected memory ranges in some microcode for some Intel(R) Processors within Ring…