[SECURITY] [DLA 4401-1] firefox-esr security update
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Debian LTS Advisory DLA-4401-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
December 11, 2025 https://wiki.debian.org/LTS
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Package : firefox-esr
Version : 140.6.0esr-1~deb11u1
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 Debian 11 bullseye, these problems have been fixed in version
140.6.0esr-1~deb11u1.
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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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