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AlmaLinux 9 : firefox (ALSA-2026:0694)

high Nessus Plugin ID 291346

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Synopsis

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

Description

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:0694 advisory.

 * firefox: Spoofing issue in the Downloads Panel component (CVE-2025-14327)
 * firefox: Use-after-free in the JavaScript: GC component (CVE-2026-0885)
 * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147 (CVE-2026-0891)
 * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-0878)
 * firefox: Use-after-free in the IPC component (CVE-2026-0882)
 * firefox: Use-after-free in the JavaScript Engine component (CVE-2026-0884)
 * firefox: Information disclosure in the Networking component (CVE-2026-0883)
 * firefox: Mitigation bypass in the DOM: Security component (CVE-2026-0877)
 * firefox: Spoofing issue in the DOM: Copy & Paste and Drag & Drop component (CVE-2026-0890)
 * firefox: Clickjacking issue, information disclosure in the PDF Viewer component (CVE-2026-0887)
 * firefox: Sandbox escape due to incorrect boundary conditions in the Graphics component (CVE-2026-0879)
 * firefox: Sandbox escape due to integer overflow in the Graphics component (CVE-2026-0880)
 * firefox: Incorrect boundary conditions in the Graphics component (CVE-2026-0886)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 firefox and / or firefox-x11 packages.

See Also

https://errata.almalinux.org/9/ALSA-2026-0694.html

https://access.redhat.com/errata/RHSA-2026:0694

Plugin Details

Severity: High

ID: 291346

File Name: alma_linux_ALSA-2026-0694.nasl

Version: 1.1

Type: local

Published: 1/19/2026

Updated: 1/19/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-14327

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:9::supplementary, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::appstream, p-cpe:/a:alma:linux:firefox-x11, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::nfv, p-cpe:/a:alma:linux:firefox, cpe:/o:alma:linux:9::crb

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/15/2026

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-14327, CVE-2026-0877, CVE-2026-0878, CVE-2026-0879, CVE-2026-0880, CVE-2026-0882, CVE-2026-0883, CVE-2026-0884, CVE-2026-0885, CVE-2026-0886, CVE-2026-0887, CVE-2026-0890, CVE-2026-0891

RHSA: 2026:0694