CVE-2023-5342CWE-324

Shim: expired secure boot certificate

Medium · published August 15, 2025

CVSS v3.1
4.1
EPSS
0%
Percentile
0.4
In the wild
Unconfirmed
What it is

The Fedora Secure Boot CA certificate shipped with shim in Fedora was expired which could lead to old or invalid signed boot components being loaded.

The record
Technical detail
CVSS v3.1
4.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00088 · 0.4th percentile
Weakness
CWE-324 · Use of a Key Past its Expiration Date
Published
2025-08-15T12:06Z
EPSS history
Timeline
  • 15 AUG 12:06Z
    Shim: expired secure boot certificate
    cvelistv5