SUSE SLES12: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:2583-1)

critical Nessus Plugin ID 323039

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2583-1 advisory.

Update to Firefox 140.12.0 ESR (MFSA 2026-58, bsc#1268071):

- CVE-2026-12289: Privilege escalation in the Graphics: WebRender component.
- CVE-2026-12290: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12291: Use-after-free in the Networking: HTTP component.
- CVE-2026-12292: Incorrect boundary conditions in the Web Audio component.
- CVE-2026-12294: Sandbox escape in the DOM: Workers component.
- CVE-2026-12295: Sandbox escape in the DOM: Navigation component.
- CVE-2026-12296: Sandbox escape in the Security: Process Sandboxing component.
- CVE-2026-12297: Sandbox escape due to incorrect boundary conditions in the Networking component.
- CVE-2026-12298: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12299: JIT miscompilation in the DOM: Core & HTML component.
- CVE-2026-12302: Mitigation bypass in the DOM: Security component.
- CVE-2026-12304: Same-origin policy bypass in the Networking: Cookies component.
- CVE-2026-12305: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12306: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12307: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12308: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12309: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12310: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12311: Information disclosure, sandbox escape in the Security: Process Sandboxing component.
- CVE-2026-12312: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12313: Information disclosure, sandbox escape in the Security: Process Sandboxing component.
- CVE-2026-12314: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12315: Mitigation bypass in the DOM: Security component.
- CVE-2026-12324: Incorrect boundary conditions in the Graphics: CanvasWebGL component.
- CVE-2026-12325: Denial-of-service in the Graphics: ImageLib component.
- CVE-2026-12327: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152.
- CVE-2026-12328: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152.
- CVE-2026-12329: Memory safety bug fixed in Firefox ESR 140.12.
- CVE-2026-12330: Incorrect boundary conditions in the Internationalization component.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected MozillaFirefox, MozillaFirefox-devel and / or MozillaFirefox-translations-common packages.

Plugin Details

Severity: Critical

ID: 323039

File Name: suse_SU-2026-2583-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 6/26/2026

Updated: 6/26/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-12297

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:mozillafirefox-devel, p-cpe:/a:novell:suse_linux:mozillafirefox-translations-common, p-cpe:/a:novell:suse_linux:mozillafirefox

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2026

Vulnerability Publication Date: 6/15/2026

Reference Information

CVE: CVE-2026-12289, CVE-2026-12290, CVE-2026-12291, CVE-2026-12292, CVE-2026-12294, CVE-2026-12295, CVE-2026-12296, CVE-2026-12297, CVE-2026-12298, CVE-2026-12299, CVE-2026-12302, CVE-2026-12304, CVE-2026-12305, CVE-2026-12306, CVE-2026-12307, CVE-2026-12308, CVE-2026-12309, CVE-2026-12310, CVE-2026-12311, CVE-2026-12312, CVE-2026-12313, CVE-2026-12314, CVE-2026-12315, CVE-2026-12324, CVE-2026-12325, CVE-2026-12327, CVE-2026-12328, CVE-2026-12329, CVE-2026-12330

SuSE: SUSE-SU-2026:2583-1

Detections

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