Double free in Mozilla products - CVE-2025-5262
Published: May 27, 2025
Vulnerability identifier: #VU109855
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-2025-5262
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the vpx_codec_enc_init_multi() function in libvpx encoder for WebRTC. A remote attacker can trick the victim into visiting a specially crafted website, trigger a double free error and execute arbitrary code on the target system.
Affected software
Mozilla Firefox
Firefox ESR
Firefox for Android
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Package Hub 15
openSUSE Leap
Fedora
Mozilla Thunderbird
libvpx
MozillaThunderbird-translations-common
MozillaThunderbird-translations-other
MozillaThunderbird-debugsource
MozillaThunderbird
MozillaThunderbird-debuginfo
Firefox ESR
Firefox for Android
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Package Hub 15
openSUSE Leap
Fedora
Mozilla Thunderbird
libvpx
MozillaThunderbird-translations-common
MozillaThunderbird-translations-other
MozillaThunderbird-debugsource
MozillaThunderbird
MozillaThunderbird-debuginfo
How to mitigate CVE-2025-5262
Install updates from vendor's website.
Mozilla Firefox - update to 139.0
Firefox for Android - update to 139.0
Firefox ESR - addressed in versions 115.24.0, 128.11.0
Mozilla Thunderbird - addressed in versions 128.11.0, 139.0
libvpx - addressed in versions 1.15.0-3.fc41, 1.15.0-3.fc42, 1.15.0-3.fc43
MozillaThunderbird-translations-common - update to 128.11.0-150200.8.221.1
MozillaThunderbird-translations-other - update to 128.11.0-150200.8.221.1
MozillaThunderbird-debugsource - update to 128.11.0-150200.8.221.1
MozillaThunderbird - update to 128.11.0-150200.8.221.1
MozillaThunderbird-debuginfo - update to 128.11.0-150200.8.221.1
Firefox for Android - update to 139.0
Firefox ESR - addressed in versions 115.24.0, 128.11.0
Mozilla Thunderbird - addressed in versions 128.11.0, 139.0
libvpx - addressed in versions 1.15.0-3.fc41, 1.15.0-3.fc42, 1.15.0-3.fc43
MozillaThunderbird-translations-common - update to 128.11.0-150200.8.221.1
MozillaThunderbird-translations-other - update to 128.11.0-150200.8.221.1
MozillaThunderbird-debugsource - update to 128.11.0-150200.8.221.1
MozillaThunderbird - update to 128.11.0-150200.8.221.1
MozillaThunderbird-debuginfo - update to 128.11.0-150200.8.221.1