Intel

CVE-2026-6485

Unified Computing System (UCS): Active Debug Code (CVE-2026-6485)

highEPSS 0.2%

Affected

  • Cisco/Unified Computing System (UCS) = UEFI Shell implementation..UEFI Shell implementation
  • Insyde/UEFI Firmware < *..05.2B.17
  • Insyde/UEFI Firmware < *..05.3A.17
  • Insyde/UEFI Firmware < *..05.48.17
  • Insyde/UEFI Firmware < *..05.56.17
  • Insyde/UEFI Firmware < *..05.63.17
  • Insyde/UEFI Firmware < *..05.72.17

Fixed in

  • Insyde/UEFI Firmware 05.2B.17
  • Insyde/UEFI Firmware 05.3A.17
  • Insyde/UEFI Firmware 05.48.17
  • Insyde/UEFI Firmware 05.56.17
  • Insyde/UEFI Firmware 05.63.17
  • Insyde/UEFI Firmware 05.72.17

Description

UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.

Source: Microsoft Security Update Guidecvelistv5NVD (NIST)BSI WID PortalBSI CSAF

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

CiscoUnified Computing System (UCS)
UEFI Shell implementation
InsydeUEFI Firmware
< 05.2B.17fixed in 05.2B.17< 05.3A.17fixed in 05.3A.17< 05.48.17fixed in 05.48.17< 05.56.17fixed in 05.56.17< 05.63.17fixed in 05.63.17< 05.72.17fixed in 05.72.17

Metrics

XIEM Effective CVSS
8.2
Source: cna-v3
EPSS percentile
6.9 %
Low — this CVE sits in the lower 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
high
Priority score
71.14
Exploit maturity
no public PoC known
CVSS v3
8.2
EPSS score
0.2 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-09-09 03:54 UTC
CWE
CWE-489

Weakness classes (CWE)

  • CWE-489Base

    Active Debug Code

    The product is released with debugging code still enabled or active.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-09-10 15:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-6485","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalIm…
  2. New CVE Received2026-09-09 04:19 UTC· 8338d8cb-57f7-4252-abc0-96fd13e98d21
    • Description: UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.
    • CVSS V3.1: AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    • CWE: CWE-489
    • Affected: New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/6xxx/CVE-2026-6485.json">CVE-2026-6485</a>