CVE-2025-31936

MEDIUM
5.7
CVSS Score
Published: August 11, 2026 at 04:28 PM UTC
Updated: September 29, 2026 at 11:10 AM UTC
147 products affected across 1 vendorXeon 6543P B FirmwareXeon 6546P B FirmwareXeon 6357P Firmware

Using Intel(R) Xeon(R) 6 processors when using Intel(R) TDX by N/A?

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
intel-xeon-6315p (same device)
All versions
intel-xeon-6325p (same device)
All versions
intel-xeon-6333p (same device)
All versions
intel-xeon-6337p (same device)
All versions
intel-xeon-6349p (same device)
All versions
intel-xeon-6353p (same device)
All versions
intel-xeon-6357p (same device)
All versions
intel-xeon-6369p (same device)
All versions
intel-xeon-6377p (same device)
All versions
intel-xeon-6503p-b (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1260

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