Code Injection in Mozilla Firefox and Firefox ESR - CVE-2025-11713

Vulnerability identifier: #VU116997

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-2025-11713

CWE-ID: CWE-94

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 improper input validation in the “Copy as cURL” feature. A remote attacker can send trick the victim into copying a specially crafted URL and execute arbitrary code on the system.

Note, the vulnerability affects Windows installations only. 

Mozilla Firefox
Firefox ESR
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Enterprise Storage
Desktop Applications Module
SUSE Package Hub 15
openSUSE Leap
Ubuntu
Mozilla Thunderbird
MozillaFirefox-devel
MozillaFirefox-debuginfo
MozillaFirefox-debugsource
MozillaFirefox-translations-common
MozillaFirefox
MozillaThunderbird-debugsource
MozillaThunderbird-debuginfo
MozillaThunderbird
MozillaThunderbird-translations-other
MozillaThunderbird-translations-common
MozillaFirefox-translations-other
MozillaFirefox-branding-upstream
thunderbird (Ubuntu package)

Install updates from vendor's website.

Mozilla Firefox - update to 144.0
Firefox ESR - update to 140.4.0
Mozilla Thunderbird - addressed in versions 140.4, 144.0
MozillaFirefox-devel - addressed in versions 140.4.0-112.286.1, 140.4.0-150200.152.207.1, 140.5.0-112.289.1, 140.5.0-150200.152.210.1
MozillaFirefox-debuginfo - addressed in versions 140.4.0-112.286.1, 140.4.0-150200.152.207.1, 140.5.0-112.289.1, 140.5.0-150200.152.210.1
MozillaFirefox-debugsource - addressed in versions 140.4.0-112.286.1, 140.4.0-150200.152.207.1, 140.5.0-112.289.1, 140.5.0-150200.152.210.1
MozillaFirefox-translations-common - addressed in versions 140.4.0-112.286.1, 140.4.0-150200.152.207.1, 140.5.0-112.289.1, 140.5.0-150200.152.210.1
MozillaFirefox - addressed in versions 140.4.0-112.286.1, 140.4.0-150200.152.207.1, 140.5.0-112.289.1, 140.5.0-150200.152.210.1
MozillaThunderbird-debugsource - update to 140.4.0-150200.8.242.1
MozillaThunderbird-debuginfo - update to 140.4.0-150200.8.242.1
MozillaThunderbird - update to 140.4.0-150200.8.242.1
MozillaThunderbird-translations-other - update to 140.4.0-150200.8.242.1
MozillaThunderbird-translations-common - update to 140.4.0-150200.8.242.1
MozillaFirefox-translations-other - addressed in versions 140.4.0-150200.152.207.1, 140.5.0-150200.152.210.1
MozillaFirefox-branding-upstream - addressed in versions 140.4.0-150200.152.207.1, 140.5.0-150200.152.210.1
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2025-83/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-81/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1986142

• Multiple vulnerabilities in Mozilla Firefox
• Multiple vulnerabilities in Mozilla Thunderbird
• Multiple vulnerabilities in Mozilla Thunderbird ESR
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox
• SUSE update for MozillaThunderbird
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox
• Ubuntu update for thunderbird