CVE-2025-31936

Privilege escalation via overlapping protected memory ranges

Published Aug 11, 2026 · Updated Aug 11, 2026

Privilege escalation in Intel Xeon 6 processors using Intel TDX allows local users with SMM privileges to gain higher privileges. Within SMM, the processor improperly permits protected memory ranges to overlap, bypassing their intended separation. Exploitation requires existing privileged SMM access, high attack complexity, special internal knowledge, and specific attack conditions; confidentiality and integrity are affected, but availability is not.

CVSS severity7.0
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Intel Xeon 6 processors using Intel TDX allows local users with SMM privileges to gain higher privileges. Within SMM, the processor improperly permits protected memory ranges to overlap, bypassing their intended separation. Exploitation requires existing privileged SMM access, high attack complexity, special internal knowledge, and specific attack conditions; confidentiality and integrity are affected, but availability is not.

The record

CVE
CVE-2025-31936
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1260, CAPEC-679, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.0IntelCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1260Improper Handling of Overlap Between Protected Memory Ranges
CAPEC-679Exploitation of Improperly Configured or Implemented Memory Protections
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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