IntelCVE-2026-20901
Intel Xeon processors: improper input validation
Medium4.0CVE-2026-20901 · Published Aug 11, 2026 · updated Aug 28, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Intel(R) Xeon(R) processors Product | <= See references | No fix yet |
Details and references
- CVSS 4.0
- 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
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-20
More Intel advisories
All Intel| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 11 | Intel reference platforms: information disclosure | Medium4.0 | No fix yet |
| Aug 11 | Intel Processors: information disclosure | Medium4.0 | No fix yet |
| Aug 11 | Intel Extension for PyTorch: unsafe deserialization | Medium4.6 | No fix yet |
| Aug 11 | Intel Transfer Learning Tool: privilege escalation | Medium6.3 | No fix yet |
| Aug 11 | Intel Slim Bootloader may allow an information disclosure. S: integer overflow | Low2.4 | No fix yet |
| Aug 11 | Intel Workload Services Framework software: privilege escalation | Medium5.4 | No fix yet |