Home / mailings [SECURITY] [DSA 6078-1] firefox-esr security update
Posted on 10 December 2025
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6078-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
December 10, 2025 https://www.debian.org/security/faq
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Package : firefox-esr
CVE ID : CVE-2025-14321 CVE-2025-14322 CVE-2025-14323 CVE-2025-14324
CVE-2025-14325 CVE-2025-14328 CVE-2025-14329 CVE-2025-14330
CVE-2025-14331 CVE-2025-14333
Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, sandbox escape, same-origin policy bypass or privilege escalation.
For the oldstable distribution (bookworm), these problems have been fixed
in version 140.6.0esr-1~deb12u1.
For the stable distribution (trixie), these problems have been fixed in
version 140.6.0esr-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: debian-security-announce@lists.debian.org
