How severe is CVE-2023-5342?

CVE-2023-5342 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-5342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-5342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-5342 have an EU (EUVD) identifier?

Yes. CVE-2023-5342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57659.

When was CVE-2023-5342 published?

CVE-2023-5342 was published on 2025-08-14 and last updated on 2026-06-17.

CVE-2023-5342

CVE-2023-5342 is a medium-severity vulnerability with a CVSS 3.x base score of 4.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-324.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-57659
Weakness: CWE-324
Published: 2025-08-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-5342?: CVE-2023-5342 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-5342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-5342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-5342 have an EU (EUVD) identifier?: Yes. CVE-2023-5342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57659.
When was CVE-2023-5342 published?: CVE-2023-5342 was published on 2025-08-14 and last updated on 2026-06-17.

References

Other CWE-324 vulnerabilities

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CVE-2025-2291 — High (CVSS 8.1): Password can be used past expiry in PgBouncer due to auth_query not taking into account Postgres its VALID UNTIL value,…
CVE-2026-52809 — Medium (CVSS 6.8): Gogs is an open source self-hosted Git service. Prior to 0.14.3, password-reset tokens are generated using…
CVE-2024-25679 — Medium (CVSS 6.5): In PQUIC before 5bde5bb, retention of unused initial encryption keys allows attackers to disrupt a connection with a…
CVE-2025-33012 — Medium (CVSS 6.3): IBM Db2 10.5.0 through 10.5.11, 11.1.0 through 11.1.4.7, 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux…

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