CVE-2025-11708 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free11 documents8 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 75.86%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla ThunderbirdMozilla Firefox
Timeline
PublishedOct 14
Latest updateFeb 2

Description

Use-after-free in MediaTrackGraphImpl::GetInstance(). This vulnerability was fixed in Firefox 144, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

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 Packages3 packages

▶NVDmozilla/firefox< 140.4.0+1
▶NVDmozilla/thunderbird141.0 — 144.0+1
▶Debianmozilla/thunderbird< 1:140.4.0esr-1~deb11u1+3

🔴Vulnerability Details

3
CVEList
Use-after-free in MediaTrackGraphImpl::GetInstance()↗2025-10-14
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OSV
CVE-2025-11708: Use-after-free in MediaTrackGraphImpl::GetInstance() This vulnerability affects Firefox < 144, Firefox ESR < 140↗2025-10-14
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GHSA
GHSA-h7jc-cc8w-wcwg: Use-after-free in MediaTrackGraphImpl::GetInstance() This vulnerability affects Firefox < 144, Firefox ESR < 140↗2025-10-14
▶

📋Vendor Advisories

7
Ubuntu
Thunderbird vulnerabilities↗2026-02-02
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Red Hat
thunderbird: firefox: Use-after-free in MediaTrackGraphImpl::GetInstance()↗2025-10-14
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Debian
CVE-2025-11708: firefox - Use-after-free in MediaTrackGraphImpl::GetInstance() This vulnerability affects ...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-85: CVE-2025-11708↗
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Mozilla
Mozilla Foundation Security Advisory 2025-81: CVE-2025-11708↗
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CVE-2025-11708 — Use After Free in Mozilla Firefox | cvebase