Debian dsa-6350 : firefox-esr - security update

critical Nessus Plugin ID 321490

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6350 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6350-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 17, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : firefox-esr CVE ID : 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

Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, bypass of the same-origin policy, privilege escalation, information disclosure, spoofing or sandbox escape.

For the stable distribution (trixie), these problems have been fixed in version 140.12.0esr-1~deb13u1.

We recommend that you upgrade your firefox-esr packages.

For the detailed security status of firefox-esr please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/firefox-esr

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the firefox-esr packages.

Plugin Details

Severity: Critical

ID: 321490

File Name: debian_DSA-6350.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 6/18/2026

Updated: 6/18/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

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-2026-12289

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS Score Source: CVE-2026-12315

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:firefox-esr-l10n-de, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-son, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sq, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-te, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hu, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-tr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bg, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hy-am, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-mx, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-si, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cs, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eo, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fa, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-be, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-zh-tw, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pt-br, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ne-np, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ar, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pa-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ro, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-trs, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-my, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nb-no, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eu, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-dsb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-km, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca-valencia, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ja, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sc, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-xh, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-az, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-oc, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cy, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-gb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-uz, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lij, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-br, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-szl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-it, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fur, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ur, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sco, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fy-nl, p-cpe:/a:debian:debian_linux:firefox-esr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sat, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ach, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-da, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-tl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ast, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-ar, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-el, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hsb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ka, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bs, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ru, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sv-se, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pt-pt, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-th, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gu-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-zh-cn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-skr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-he, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-vi, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-is, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kab, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-ca, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-rm, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hi-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nn-no, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-uk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-et, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lv, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-all, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-tg, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ff, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-an, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-af, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ms, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gd, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-es, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ia, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lt, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-cl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cak, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ga-ie, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fi, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ko, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ta, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-id

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2026

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

Detections

Analytics