SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:3658-1)

critical Nessus Plugin ID 338826

Synopsis

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

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3658-1 advisory.

Update to Firefox Extended Support Release 140.14.0 ESR.

- MFSA 2026-74 (bsc#1274867)
- CVE-2026-74934: Site isolation issue in the Graphics: CanvasWebGL component.
- CVE-2026-74935: Privilege escalation in the DOM: Networking component.
- CVE-2026-74936: Use-after-free in the JavaScript: WebAssembly component.
- CVE-2026-74937: Use-after-free in the JavaScript: GC component.
- CVE-2026-74938: Mitigation bypass in the JavaScript: GC component.
- CVE-2026-74939: Privilege escalation in the DOM: Navigation component.
- CVE-2026-74940: Use-after-free in the Graphics: Text component.
- CVE-2026-74941: Privilege escalation in the Graphics: CanvasWebGL component.
- CVE-2026-74942: Privilege escalation in the Remote Settings Client component.
- CVE-2026-74943: Use-after-free in the Graphics: ImageLib component.
- CVE-2026-74944: Use-after-free in the DOM: Core & HTML component.
- CVE-2026-74945: Information disclosure in the Graphics: Text component.
- CVE-2026-74946: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component.
- CVE-2026-74947: Privilege escalation due to invalid pointer in the Graphics component.
- CVE-2026-74948: Information disclosure in the Graphics component.
- CVE-2026-74949: Privilege escalation due to use-after-free in the Graphics: Canvas2D component.
- CVE-2026-74950: Privilege escalation in the Downloads API component.
- CVE-2026-74951: Clickjacking issue in Firefox for Android.
- CVE-2026-74952: Privilege escalation in the Application Update component.
- CVE-2026-74953: Privilege escalation in the Networking: Cookies component.
- CVE-2026-74954: Information disclosure due to side-channel in the Storage: Cache API component.
- CVE-2026-74955: Privilege escalation in the Request Handling component.
- CVE-2026-74956: Same-origin policy bypass in the DOM: Service Workers component.
- CVE-2026-74957: Mitigation bypass in the Safe Browsing component.
- CVE-2026-74958: Information disclosure in the WebRTC component.
- CVE-2026-74959: Mitigation bypass in the Storage: Cache API component.
- CVE-2026-74960: Site isolation issue in the WebExtensions component.
- CVE-2026-74961: Side-channel in the Web Audio component.
- CVE-2026-74962: Site isolation issue in the Networking: Cookies component.
- CVE-2026-74963: Same-origin policy bypass in the Networking: Cookies component.
- CVE-2026-74964: Integer overflow in the Graphics component.
- CVE-2026-74965: Privilege escalation in the Shell Integration component.
- CVE-2026-74966: Information disclosure in the Form Autofill component.
- CVE-2026-74967: Same-origin policy bypass in the Audio/Video: Playback component.
- CVE-2026-74968: Site isolation issue in the Graphics: WebRender component.
- CVE-2026-74969: Use-after-free in the Layout: Text and Fonts component.
- CVE-2026-74970: Site isolation issue in the Graphics component.
- CVE-2026-74971: Information disclosure in the DOM: UI Events & Focus Handling component.
- CVE-2026-74972: Information disclosure in the DOM: Push Subscriptions component.
- CVE-2026-74973: Race condition, use-after-free in the Graphics component.
- CVE-2026-74974: Same-origin policy bypass in the Graphics: ImageLib component.
- CVE-2026-74975: Spoofing issue in the Downloads component in Firefox for Android.
- CVE-2026-74976: JIT miscompilation in the JavaScript Engine: JIT component.
- CVE-2026-74977: Integer overflow in the Graphics component.
- CVE-2026-74978: Clickjacking issue in the Widget component.
- CVE-2026-74979: Mitigation bypass in the Add-ons Manager component.
- CVE-2026-74980: Clickjacking issue in the Downloads component in Firefox for Android.
- CVE-2026-74981: Site isolation issue in the Audio/Video: Web Codecs component.
- CVE-2026-74982: Denial-of-service in the Widget component.
- CVE-2026-74983: Mitigation bypass in the Data Loss Prevention component.
- CVE-2026-74984: Race condition in the JavaScript Engine component.
- CVE-2026-74985: Privilege escalation in the Enterprise Policies component.
- CVE-2026-74986: Site isolation issue in the CSS Parsing and Computation component.
- CVE-2026-74987: Internally found bugs fixed in Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154.
- CVE-2026-74988: Internally found bugs fixed in Firefox ESR 153.1 and Firefox 154.
- CVE-2026-74989: Internally found bugs fixed in Firefox 154.
- CVE-2026-74990: Internally found bugs fixed in Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154.
- CVE-2026-75874: Sandbox escape in the Remote Settings Client 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, MozillaFirefox-translations-common and / or MozillaFirefox- translations-other packages.

Plugin Details

Severity: Critical

ID: 338826

File Name: suse_SU-2026-3658-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 8/22/2026

Updated: 8/22/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.75

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-74944

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:mozillafirefox-devel, p-cpe:/a:novell:suse_linux:mozillafirefox-translations-common, p-cpe:/a:novell:suse_linux:mozillafirefox-translations-other, p-cpe:/a:novell:suse_linux:mozillafirefox

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/20/2026

Vulnerability Publication Date: 8/18/2026

Reference Information

CVE: CVE-2026-74934, CVE-2026-74935, CVE-2026-74936, CVE-2026-74937, CVE-2026-74938, CVE-2026-74939, CVE-2026-74940, CVE-2026-74941, CVE-2026-74942, CVE-2026-74943, CVE-2026-74944, CVE-2026-74945, CVE-2026-74946, CVE-2026-74947, CVE-2026-74948, CVE-2026-74949, CVE-2026-74950, CVE-2026-74951, CVE-2026-74952, CVE-2026-74953, CVE-2026-74954, CVE-2026-74955, CVE-2026-74956, CVE-2026-74957, CVE-2026-74958, CVE-2026-74959, CVE-2026-74960, CVE-2026-74961, CVE-2026-74962, CVE-2026-74963, CVE-2026-74964, CVE-2026-74965, CVE-2026-74966, CVE-2026-74967, CVE-2026-74968, CVE-2026-74969, CVE-2026-74970, CVE-2026-74971, CVE-2026-74972, CVE-2026-74973, CVE-2026-74974, CVE-2026-74975, CVE-2026-74976, CVE-2026-74977, CVE-2026-74978, CVE-2026-74979, CVE-2026-74980, CVE-2026-74981, CVE-2026-74982, CVE-2026-74983, CVE-2026-74984, CVE-2026-74985, CVE-2026-74986, CVE-2026-74987, CVE-2026-74988, CVE-2026-74989, CVE-2026-74990, CVE-2026-75874

SuSE: SUSE-SU-2026:3658-1

Detections

Analytics