Use of Uninitialized Variable in Mozilla products - CVE-2026-92052

Vulnerability identifier: #VU150073

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-92052

CWE-ID: CWE-457

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to use of uninitialized memory in the Graphics: CanvasWebGL component when processing input. A remote attacker can process input to escalate privileges.

Firefox for Android
Mozilla Firefox
Firefox ESR
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP4
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 High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Desktop Applications Module
openSUSE Leap
MozillaFirefox-translations-common
MozillaFirefox-debuginfo
MozillaFirefox
MozillaFirefox-debugsource
MozillaFirefox-devel
MozillaFirefox-translations-other
MozillaFirefox-branding-upstream

Install security update from vendor's website.

Firefox for Android - update to 156.0
Mozilla Firefox - update to 156.0
Firefox ESR - update to 153.3.0
MozillaFirefox-translations-common - addressed in versions 153.3.0-118.8.1, 153.3.0-150400.157.8.1
MozillaFirefox-debuginfo - addressed in versions 153.3.0-118.8.1, 153.3.0-150400.157.8.1
MozillaFirefox - addressed in versions 153.3.0-118.8.1, 153.3.0-150400.157.8.1
MozillaFirefox-debugsource - addressed in versions 153.3.0-118.8.1, 153.3.0-150400.157.8.1
MozillaFirefox-devel - addressed in versions 153.3.0-118.8.1, 153.3.0-150400.157.8.1
MozillaFirefox-translations-other - update to 153.3.0-150400.157.8.1
MozillaFirefox-branding-upstream - update to 153.3.0-150400.157.8.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2026-93/
• https://bugzilla.mozilla.org/show_bug.cgi?id=2061499

• Multiple vulnerabilities in Mozilla Firefox
• SUSE update for MozillaFirefox
• SUSE update for MozillaFirefox