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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-0239 Detail

Description

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1929156 Issue Tracking  Permissions Required 
https://www.mozilla.org/security/advisories/mfsa2025-01/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2025-02/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2025-04/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2025-05/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-295 Improper Certificate Validation CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
128.6.0
 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
134.0
 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
128.6.0
 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
129.0		Up to (excluding)
134.0

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-0239
NVD Published Date:
01/07/2025
NVD Last Modified:
04/03/2025
Source:
Mozilla Corporation