CVE-2025-14326 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free9 documents8 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 77.07%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedDec 9

Description

Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDmozilla/firefox< 146.0
▶NVDmozilla/thunderbird< 146.0

🔴Vulnerability Details

3
GHSA
GHSA-2628-4jvp-96vc: Use-after-free in the Audio/Video: GMP component↗2025-12-09
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CVEList
Use-after-free in the Audio/Video: GMP component↗2025-12-09
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OSV
CVE-2025-14326: Use-after-free in the Audio/Video: GMP component↗2025-12-09
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📋Vendor Advisories

4
Red Hat
firefox: Use-after-free in the Audio/Video: GMP component↗2025-12-09
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Debian
CVE-2025-14326: firefox - Use-after-free in the Audio/Video: GMP component. This vulnerability affects Fir...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14326↗
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Mozilla
Mozilla Foundation Security Advisory 2025-95: CVE-2025-14326↗
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🕵️Threat Intelligence

1
Wiz
CVE-2025-14326 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2025-14326 — Use After Free in Mozilla Firefox | cvebase