Description
Improper input validation for some Intel(R) Xeon(R) processors within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable data alteration. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (high) and availability (none) impacts.
Affected products
intel: xeon bronze 3408u firmware; intel: xeon bronze 3408u; intel: xeon gold 5403n firmware; intel: xeon gold 5403n; intel: xeon gold 5411n firmware; intel: xeon gold 5411n; intel: xeon gold 5412u firmware; intel: xeon gold 5412u; intel: xeon gold 5415\+ firmware; intel: xeon gold 5415\+; intel: xeon platinum 8592\+ firmware; intel: xeon platinum 8592\+; intel: xeon platinum 8592v firmware; intel: xeon platinum 8592v; intel: xeon platinum 8593q firmware
References1
- intel.com/content/www/us/en/security-center/advisory/intel-sa-0… Vendor Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N - CVSS 4.0
-
4.0
MEDIUM
Score source: CNA
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 1 · as of 12 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.