Buffer overflow in Mozilla Firefox and Firefox ESR - CVE-2025-4082

Vulnerability identifier: #VU108045

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-4082

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing WebGL shader attributes. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code on the target system.

Note, the vulnerability affects macOS installations only.

Mozilla Firefox
Firefox ESR
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Enterprise Storage
Slackware Linux
SUSE Package Hub 15
Desktop Applications Module
openSUSE Leap
openEuler
Mozilla Thunderbird
mozilla-firefox
mozilla-thunderbird
MozillaThunderbird-translations-other
MozillaThunderbird-debuginfo
MozillaThunderbird-translations-common
MozillaThunderbird
MozillaThunderbird-debugsource
MozillaFirefox-devel
MozillaFirefox-debugsource
MozillaFirefox
MozillaFirefox-translations-common
MozillaFirefox-translations-other
MozillaFirefox-branding-upstream
MozillaFirefox-debuginfo
thunderbird
thunderbird-debuginfo
thunderbird-debugsource
thunderbird-librnp-rnp
thunderbird-wayland

Install updates from vendor's website.

Mozilla Firefox - update to 138.0
Firefox ESR - addressed in versions 115.23.0, 128.10.0
Mozilla Thunderbird - addressed in versions 128.10, 138.0
mozilla-firefox - update to 128.10.0esr
mozilla-thunderbird - update to 128.10.0esr
MozillaThunderbird-translations-other - update to 128.10.0-150200.8.212.1
MozillaThunderbird-debuginfo - update to 128.10.0-150200.8.212.1
MozillaThunderbird-translations-common - update to 128.10.0-150200.8.212.1
MozillaThunderbird - update to 128.10.0-150200.8.212.1
MozillaThunderbird-debugsource - update to 128.10.0-150200.8.212.1
MozillaFirefox-devel - update to 128.10.0-150200.152.179.1
MozillaFirefox-debugsource - update to 128.10.0-150200.152.179.1
MozillaFirefox - update to 128.10.0-150200.152.179.1
MozillaFirefox-translations-common - update to 128.10.0-150200.152.179.1
MozillaFirefox-translations-other - update to 128.10.0-150200.152.179.1
MozillaFirefox-branding-upstream - update to 128.10.0-150200.152.179.1
MozillaFirefox-debuginfo - update to 128.10.0-150200.152.179.1
thunderbird - update to 140.4.0-1
thunderbird-debuginfo - update to 140.4.0-1
thunderbird-debugsource - update to 140.4.0-1
thunderbird-librnp-rnp - update to 140.4.0-1
thunderbird-wayland - update to 140.4.0-1

• https://www.mozilla.org/en-US/security/advisories/mfsa2025-30/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-29/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-28/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1937097

• Multiple vulnerabilities in Mozilla Firefox
• Multiple vulnerabilities in Mozilla Thunderbird
• Multiple vulnerabilities in Mozilla Thunderbird ESR
• Slackware Linux update for mozilla-firefox
• Slackware Linux update for mozilla-thunderbird
• SUSE update for MozillaFirefox
• SUSE update for MozillaThunderbird
• openEuler 24.03 LTS SP2 update for thunderbird