How severe is CVE-2025-31936?

CVE-2025-31936 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

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.

What products are affected by CVE-2025-31936?

CVE-2025-31936 primarily affects Intel Xeon 6337p Firmware. In total, 73 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

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.

When was CVE-2025-31936 published?

CVE-2025-31936 was published on 2026-08-11 and last updated on 2026-09-29.

CVE-2025-31936

CVE-2025-31936 is a medium-severity vulnerability in Intel Xeon 6337p Firmware with a CVSS 3.x base score of 5.7. 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: Medium (CVSS 3.x base score 5.7)
CVSS v4: 7.0
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1260
Affected product: Intel Xeon 6337p Firmware
Published: 2026-08-11
Last modified: 2026-09-29

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 3.x base score of 5.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
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.
What products are affected by CVE-2025-31936?: CVE-2025-31936 primarily affects Intel Xeon 6337p Firmware. In total, 73 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
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.
When was CVE-2025-31936 published?: CVE-2025-31936 was published on 2026-08-11 and last updated on 2026-09-29.

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01379.html

Affected products (73)

cpe:2.3:o:intel:xeon_6337p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6349p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6353p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6357p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6369p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6377p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6503p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6503p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6505p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6507p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6511p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6513p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6515p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6516p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6517p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6518p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6520p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6521p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6523p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6527p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6530p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6532p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6533p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6543p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6544p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6546p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6548p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6553p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6556p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6563p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6706p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6714p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6716p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6718p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6724p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6725p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6726p-b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6728p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6730p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:intel:xeon_6731p_firmware:-:*:*:*:*:*:*:*

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