CVE catalog
CVE-2026-20901
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 complexi
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.10% · Oct 25, 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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | intel-microcode | sid | 3.20260227.1 | vulnerable |
| Debian | intel-microcode | forky | 3.20260227.1 | vulnerable |
| Debian | intel-microcode | trixie | 3.20251111.1~deb13u1 | vulnerable |
| Debian | intel-microcode | trixie-security | 3.20250812.1~deb13u1 | vulnerable |
| Debian | intel-microcode | bookworm | 3.20251111.1~deb12u1 | vulnerable |
| Debian | intel-microcode | bookworm-security | 3.20250812.1~deb12u1 | vulnerable |
| Cpe | xeon_bronze_3408u_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5403n_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5411n_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5412u_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5415\+_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_platinum_8592\+_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_platinum_8592v_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_platinum_8593q_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_silver_4509y_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_silver_4510_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_silver_4510t_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_silver_4514y_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_silver_4516y\+_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5416s_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5418n_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5418y_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5420\+_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5423n_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_5433n_firmware | Not reported | Not reported | unknown |
| Cpe | xeon_gold_6403n_firmware | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | intel-microcode | source | sid | (unfixed) | not yet assigned | Not reported | [1144158] |
| Debian | intel-microcode | source | forky | (unfixed) | not yet assigned | Not reported | [1144158] |
| Debian | intel-microcode | source | trixie | (unfixed) | not yet assigned | Not reported | [1144158] |
| Debian | intel-microcode | source | bookworm | (unfixed) | not yet assigned | Not reported | [1144158] |
Notes
[trixie] intel-microcode: As usual fixed top-down, expose first in unstable, then likely point release [bookworm] intel-microcode: As usual fixed top-down, expose first in unstable, then likely point release
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [intel-microcode]Affected
Details (1)
3.20251111.1~deb12u1· amd64 · bookwormAffected
nvd · intel-microcode · debian · bookworm; nvd · intel-microcode · debian · 12
[Debian 13 (Trixie)]
- [intel-microcode]Affected
Details (1)
3.20251111.1~deb13u1· amd64 · trixieAffected
nvd · intel-microcode · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_3917-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-20901]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-20901]
- [https://security-tracker.debian.org/tracker/CVE-2026-20901]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2772.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]