CVE-2025-26403

Published Aug 12, 2025 CVSS 4.0 · 4.5 Medium EPSS < 1% KEV · Not listed
Description
Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6 processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4347-1 intel-microcode security update
Debian DSA Debian DSA DSA-6030-1 intel-microcode security update
EUVD EUVD EUVD-2025-24395 Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6 processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.
Ubuntu USN Ubuntu USN USN-7866-1 Intel Microcode vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Intel
Intel xeon
Intel xeon Processors
Vendors & Products Intel
Intel xeon
Intel xeon Processors
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Out-of-bounds write in the memory subsystem for some Intel(R) Xeon(R) 6 processors when using Intel(R) SGX or Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N'}

cvssV4_0

{'score': 4.5, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
intel
Published
Updated
Feb 26, 2026, 5:49 PM
Reserved
Mar 27, 2025, 3:00 AM
Status
Deferred
Published
Aug 12, 2025, 5:15 PM
Modified
Jun 17, 2026, 9:01 AM