Input validation error in Mozilla products - CVE-2025-5265

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Main Vulnerability Database Vulnerabilities #VU109859

Input validation error in Mozilla products - CVE-2025-5265

Published: May 27, 2025


Vulnerability identifier: #VU109859
CSH Severity: Medium
CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-5265
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input within the "Copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL, trick the victim into using this command and execute arbitrary commands on the system.

The vulnerability affects Windows installations only.


Affected software

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

How to mitigate CVE-2025-5265

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
MozillaFirefox-translations-common - addressed in versions 128.11.0-112.262.1, 128.11.0-150200.152.185.1
MozillaFirefox-debuginfo - addressed in versions 128.11.0-112.262.1, 128.11.0-150200.152.185.1
MozillaFirefox - addressed in versions 128.11.0-112.262.1, 128.11.0-150200.152.185.1
MozillaFirefox-debugsource - addressed in versions 128.11.0-112.262.1, 128.11.0-150200.152.185.1
MozillaFirefox-devel - addressed in versions 128.11.0-112.262.1, 128.11.0-150200.152.185.1
MozillaThunderbird-debuginfo - update to 128.11.0-150200.8.221.1
MozillaThunderbird - update to 128.11.0-150200.8.221.1
MozillaThunderbird-debugsource - update to 128.11.0-150200.8.221.1
MozillaThunderbird-translations-other - update to 128.11.0-150200.8.221.1
MozillaThunderbird-translations-common - update to 128.11.0-150200.8.221.1
MozillaFirefox-branding-upstream - update to 128.11.0-150200.152.185.1
MozillaFirefox-translations-other - update to 128.11.0-150200.152.185.1
thunderbird - update to 128.11.1-1
thunderbird-debuginfo - update to 128.11.1-1
thunderbird-debugsource - update to 128.11.1-1
thunderbird-librnp-rnp - update to 128.11.1-1
thunderbird-wayland - update to 128.11.1-1
thunderbird (Ubuntu package) - update to 1:128.12.0+build1-0ubuntu0.22.04.1

External References

Related Security Bulletins