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Debian: DSA-5926-1 Critical: Multiple Firefox-esr Flaws

debian
Calendar Grey May 28, 2025
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Various vulnerabilities identified in Firefox may result in unauthorized code execution or data exposure. It is advisable to update firefox-esr to mitigate these threats.
Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code or cross-origin leaks
Topics%20covered

Topics Covered

security advisory code execution Debian security issues cross-origin leak firefox-esr

Summary

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code or cross-origin leaks.

For the stable distribution (bookworm), these problems have been fixed in
version 128.11.0esr-1~deb12u1.

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-2025-5263 CVE-2025-5264 CVE-2025-5266 CVE-2025-5267

Topics%20covered

Topics Covered

security advisory code execution Debian security issues cross-origin leak firefox-esr

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