CVE-2023-25742

Name: CVE-2023-25742
Creator: NVD / NIST
Published: 2023-06-02T17:15:11.583+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2023-25742 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.65%

46.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 110.0
Mozilla	Firefox Esr	< 102.8
Mozilla	Thunderbird	< 102.8

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1813424Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-06/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1813424Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-06/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory

Timeline

Published: Jun 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-25742?

How severe is CVE-2023-25742?

CVE-2023-25742 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2023-25742?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-25742?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST