critical 9.8

CVE-2025-9179 json

Sandbox escape due to invalid pointer in the Audio/Video: GMP component

published 2025-08-19 14 mo ago modified 2026-10-05 34 d ago also EUVD-2025-25246

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

Patch / fix

fixed in 4 distros 7

mozilla firefox 115.27, 128.14, 140.2, 142
mozilla firefox_esr 115.27, 128.14, 140.2, 142
mozilla thunderbird 128.14, 140.2, 142
mozilla thunderbird_esr 128.14, 140.2, 142

debian ubuntu red hat suse opensuse almalinux rocky linux

firefox-esr Debian 12 128.14.0esr-1~deb12u1
firefox-esr Debian 13 128.14.0esr-1~deb13u1
firefox-esr Debian 14 128.14.0esr-1
thunderbird Debian 12 1:128.14.0esr-1~deb12u1
thunderbird Debian 13 1:128.14.0esr-1~deb13u1
thunderbird Debian 14 1:128.14.0esr-1

debian advisories DEBIAN-CVE-2025-9179

thunderbird Ubuntu 22.04 LTS 1:140.7.1+build1-0ubuntu0.22.04.1

ubuntu advisories UBUNTU-CVE-2025-9179

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

thunderbird RHEL 10.0 128.14.0-3.el10_0
thunderbird RHEL 8 128.14.0-3.el8_10
thunderbird RHEL 9 128.14.0-3.el9_6
firefox RHEL 8 128.14.0-2.el8_10
firefox RHEL 10.0 128.14.0-2.el10_0
firefox RHEL 9 128.14.0-2.el9_6
firefox-x11 RHEL 9 128.14.0-2.el9_6
thunderbird RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 128.14.0-3.el8_6

red hat advisories RHSA-2025:15535 RHSA-2025:15496 RHSA-2025:15438 RHSA-2025:15437 RHSA-2025:15435 RHSA-2025:15436

mozjs128 SLES for SAP applications 16.0, SLES 16.0 128.14.0-160000.1.1
MozillaFirefox SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +12 more 140.2.0-150200.152.198.1
MozillaThunderbird SLE Workstation Extension 15 SP7, SLE Workstation Extension 15 SP6, SLE Module for Package Hub 15 SP7 +2 more 140.2.0-150200.8.236.1
MozillaFirefox SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 140.2.0-112.276.1

suse advisories SUSE-SU-2025:21170-1 SUSE-SU-2025:03009-1 SUSE-SU-2025:03008-1 SUSE-SU-2025:03007-1

mozjs128 openSUSE Leap 16.0 128.14.0-160000.1.1
MozillaFirefox openSUSE Tumbleweed 142.0.1-1.1
mozjs128 openSUSE Tumbleweed 128.14.0-1.1
MozillaThunderbird openSUSE Tumbleweed 140.2.0-1.1
firefox-esr openSUSE Tumbleweed 140.2.0-1.1

opensuse advisories openSUSE-SU-2025:20135-1 openSUSE-SU-2025:15516-1 openSUSE-SU-2025:15494-1 openSUSE-SU-2025:15472-1 openSUSE-SU-2025:15467-1

thunderbird AlmaLinux 10 128.14.0-3.el10_0.alma.1
thunderbird AlmaLinux 8 128.14.0-3.el8_10.alma.1
thunderbird AlmaLinux 9 128.14.0-3.el9_6.alma.1
firefox AlmaLinux 9 128.14.0-2.el9_6.alma.1
firefox-x11 AlmaLinux 9 128.14.0-2.el9_6.alma.1
firefox AlmaLinux 10 128.14.0-2.el10_0
firefox AlmaLinux 8 128.14.0-2.el8_10.alma.1

almalinux advisories ALSA-2025:14844 ALSA-2025:14743 ALSA-2025:14640 ALSA-2025:14416 ALSA-2025:14417 ALSA-2025:14442

firefox Rocky Linux 9 128.14.0-2.el9_6
firefox Rocky Linux 10 128.14.0-2.el10_0
thunderbird Rocky Linux 10 128.14.0-3.el10_0
firefox Rocky Linux 8 128.14.0-2.el8_10
thunderbird Rocky Linux 8 128.14.0-3.el8_10

rocky linux advisories RLSA-2025:14416 RLSA-2025:14417 RLSA-2025:14844 RLSA-2025:14442 RLSA-2025:14743

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-9179 updated 2026-11-04 cvss 7.5

thunderbird: firefox: Sandbox escape due to invalid pointer in the Audio/Video: GMP component

Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 thunderbird
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux 10 firefox-flatpak, thunderbird-flatpak
affected: no fix available
Red Hat Enterprise Linux AppStream (v. 8) firefox 128.14.0-2.el8_10, thunderbird 128.14.0-3.el8_10
fixed: vendor fix RHSA-2025:14442
Red Hat Enterprise Linux AppStream (v. 9) firefox 128.14.0-2.el9_6, firefox-x11 128.14.0-2.el9_6, thunderbird 128.14.0-3.el9_6
fixed: vendor fix RHSA-2025:14416
Red Hat Enterprise Linux AppStream (v. 10) firefox 128.14.0-2.el10_0, thunderbird 128.14.0-3.el10_0
fixed: vendor fix RHSA-2025:14417
Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox 128.14.0-2.el8_2, thunderbird 128.14.0-3.el8_2
fixed: vendor fix RHSA-2025:15418
Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox 128.14.0-2.el8_4, thunderbird 128.14.0-3.el8_4
fixed: vendor fix RHSA-2025:15419
Red Hat Enterprise Linux AppStream AUS (v.8.6) firefox 128.14.0-2.el8_6, thunderbird 128.14.0-3.el8_6 Red Hat Enterprise Linux AppStream E4S (v.8.6) firefox 128.14.0-2.el8_6, thunderbird 128.14.0-3.el8_6
fixed: vendor fix RHSA-2025:15422

show 8 more

Red Hat Enterprise Linux AppStream E4S (v.8.8) firefox 128.14.0-2.el8_8, thunderbird 128.14.0-3.el8_8
fixed: vendor fix RHSA-2025:15424
Red Hat Enterprise Linux AppStream E4S (v.9.0) firefox 128.14.0-2.el9_0, thunderbird 128.14.0-3.el9_0
fixed: vendor fix RHSA-2025:15420
Red Hat Enterprise Linux AppStream E4S (v.9.2) firefox 128.14.0-2.el9_2, firefox-x11 128.14.0-2.el9_2, thunderbird 128.14.0-3.el9_2
fixed: vendor fix RHSA-2025:15421
Red Hat Enterprise Linux AppStream EUS (v.9.4) firefox 128.14.0-2.el9_4, firefox-x11 128.14.0-2.el9_4, thunderbird 128.14.0-3.el9_4
fixed: vendor fix RHSA-2025:15423
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) firefox 128.14.0-2.el8_4, thunderbird 128.14.0-3.el8_4
fixed: vendor fix RHSA-2025:15419
Red Hat Enterprise Linux AppStream TUS (v.8.6) firefox 128.14.0-2.el8_6, thunderbird 128.14.0-3.el8_6
fixed: vendor fix RHSA-2025:15422
Red Hat Enterprise Linux AppStream TUS (v.8.8) firefox 128.14.0-2.el8_8, thunderbird 128.14.0-3.el8_8
fixed: vendor fix RHSA-2025:15424
Red Hat Enterprise Linux Server (v. 7 ELS) firefox 128.14.0-2.el7_9
fixed: vendor fix RHSA-2025:15430

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 14 mo ago (2025-08-20)

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mozilla Firefox
Mozilla Thunderbird

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

mozilla.org /security/advisories/mfsa2025-64/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-65/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-66/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-67/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-70/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-71/
vendor-advisory
mozilla.org /security/advisories/mfsa2025-72/
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1979527
issue-tracking, permissions-required
lists.debian.org /debian-lts-announce/2025/08/msg00018.html
lists.debian.org /debian-lts-announce/2025/08/msg00016.html

Sources

CVE List CVE-2025-9179
NVD CVE-2025-9179

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary