What is CVE-2025-26403?

CVE-2025-26403 is a high-severity vulnerability in Intel(r) Xeon(r) 6 Processors When Using Sgx Or Tdx, classified under Out-of-bounds Write. CVSS score: 7.2/10. Published 2025-08-12.

How severe is CVE-2025-26403?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Intel(r) Xeon(r) 6 Processors When Using Sgx Or Tdx

CVE-2025-26403

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.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (3.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N.

Affected products

N/a Intel(r) Xeon(r) 6 Processors When Using Sgx Or Tdx — versions See references

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2025-26403?: CVE-2025-26403 is a high-severity vulnerability in Intel(r) Xeon(r) 6 Processors When Using Sgx Or Tdx, classified under Out-of-bounds Write. CVSS score: 7.2/10. Published 2025-08-12.
How severe is CVE-2025-26403?: High severity. CVSS v3 base score is 7.2 out of 10.