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Debian: Firefox-esr Critical Memory Disclosure Exec Risk DSA-6025-1

debian
Calendar Grey October 15, 2025
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Critical security issues in Firefox-esr fixed in Debian oldstable release, affecting arbitrary code execution and memory disclosure.
Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, memory disclosure or cross-site scri...
Topics%20covered

Topics Covered

security advisory debian cross site scripting arbitrary code memory disclosure firefox-esr

Summary

For the oldstable distribution (bookworm), these problems have been fixed
in version 140.4.0esr-1~deb12u1.

For the stable distribution (trixie), these problems have been fixed in
version 140.4.0esr-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/source-package/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/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: firefox-esr
CVE ID: CVE-2025-11708 CVE-2025-11709 CVE-2025-11710

Topics%20covered

Topics Covered

security advisory debian cross site scripting arbitrary code memory disclosure firefox-esr

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