CVE-2025-20105

Year

2026

Published

Mar 10, 2026

Known Affected Devices

CVSS Score

N/A

What is CVE-2025-20105?

Improper input validation in some UEFI firmware SMM module for the Intel(R) reference platforms may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. 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 (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts.

Known Affected Devices

Cisco Cisco ASR 1002-X Cisco Cisco ASR 1004 Cisco Cisco Catalyst 2960-24TC-L Cisco Cisco Catalyst 9300-24U Cisco Cisco Catalyst 9600-40YC

FAQ

How severe is CVE-2025-20105?

CVE-2025-20105 has a CVSS score of N/A/10, rated as Unknown. Review the affected products list and apply vendor patches.

What does the CVSS score mean for CVE-2025-20105?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2025-20105 scores N/A/10 (Unknown). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2025-20105?

The list of devices confirmed to be affected by CVE-2025-20105 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2025-20105?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.