Detections
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RockyLinux 8 : firefox (RLSA-2026:0667)
high Nessus Plugin ID 288862
Synopsis
The remote RockyLinux host is missing one or more security updates.Description
The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:0667 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 RockyLinux 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, firefox-debuginfo and / or firefox-debugsource packages.See Also
https://errata.rockylinux.org/RLSA-2026:0667
https://bugzilla.redhat.com/show_bug.cgi?id=2420507
https://bugzilla.redhat.com/show_bug.cgi?id=2428961
https://bugzilla.redhat.com/show_bug.cgi?id=2428963
https://bugzilla.redhat.com/show_bug.cgi?id=2428965
https://bugzilla.redhat.com/show_bug.cgi?id=2428966
https://bugzilla.redhat.com/show_bug.cgi?id=2428967
https://bugzilla.redhat.com/show_bug.cgi?id=2428968
https://bugzilla.redhat.com/show_bug.cgi?id=2428969
https://bugzilla.redhat.com/show_bug.cgi?id=2428971
https://bugzilla.redhat.com/show_bug.cgi?id=2428972
https://bugzilla.redhat.com/show_bug.cgi?id=2428973
Plugin Details
Severity: High
ID: 288862
File Name: rocky_linux_RLSA-2026-0667.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Continuous Assessment, Nessus Agent, 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: p-cpe:/a:rocky:linux:firefox, p-cpe:/a:rocky:linux:firefox-debugsource, p-cpe:/a:rocky:linux:firefox-debuginfo, cpe:/o:rocky:linux:8
Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 1/16/2026
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