Out-of-bounds write in Intel Xeon 6 processor with P-cores and Intel Xeon 6 processor with E-cores - CVE-2025-26403
Published: August 18, 2025
Vulnerability identifier: #VU114194
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2025-26403
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Intel
Affected software:
Intel Xeon 6 processor with P-cores
Intel Xeon 6 processor with E-cores
Intel Xeon 6 processor with P-cores
Intel Xeon 6 processor with E-cores
Detailed vulnerability description
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a boundary error in the memory subsystem when using Intel SGX or Intel TDX. A local administrator can trigger an out-of-bounds write and gain elevated privileges on the target system.
How to mitigate CVE-2025-26403
Install updates from vendor's website.