What is CVE-2023-5342?

CVE-2023-5342 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Use of a Key Past its Expiration Date. CVSS score: 4.1/10. Published 2025-08-14.

How severe is CVE-2023-5342?

Medium severity. CVSS v3 base score is 4.1 out of 10.

Vulnerability in Red Hat Enterprise Linux 10

CVE-2023-5342

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.

EPSS: 0.001 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N.

Affected products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Weakness classification (CWE)

CWE-324 — Use of a Key Past its Expiration Date

References

patrick@puiterwijk.org (x_refsource_REDHAT, vdb-entry)
patrick@puiterwijk.org
patrick@puiterwijk.org
patrick@puiterwijk.org (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2023-5342?: CVE-2023-5342 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Use of a Key Past its Expiration Date. CVSS score: 4.1/10. Published 2025-08-14.
How severe is CVE-2023-5342?: Medium severity. CVSS v3 base score is 4.1 out of 10.