A firefox-esr security update has been released for Debian GNU/Linux 10 LTS to address multiple security issues.

DSA 5301-1: firefox-esr security update

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Debian Security Advisory DSA-5301-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
December 14, 2022   https://www.debian.org/security/faq
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Package : firefox-esr
CVE ID : CVE-2022-46872 CVE-2022-46874 CVE-2022-46878 CVE-2022-46880
CVE-2022-46881 CVE-2022-46882

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code or information disclosure.

For the stable distribution (bullseye), these problems have been fixed in
version 102.6.0esr-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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/