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Vulnerability record · CVE-2025-14332 · published 9 December 2025

CVE-2025-14332: Mozilla firefox out-of-bounds write vulnerability

Mozilla · Firefox

Memory safety bugs present in Firefox 145 and Thunderbird 145. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

7.3 CVSS 3.1 High EPSS 0.31% · top 78.5% CWE-787 · Out-of-bounds write
7.3CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Memory safety bugs present in Firefox 145 and Thunderbird 145. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1963153%2C1985058%2C1995637%2C1997118 Broken LinkIssue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-92/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-95/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-14332), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.