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Debian: Firefox-ESR Critical Arbitrary Code Execution DSA-5980-1

debian
Calendar Grey August 20, 2025
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Several vulnerabilities in Firefox-ESR need urgent patches to avert potential exploitation and bypass of security measures. Take action immediately.
Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, sandbox escape or bypass of the same...

Summary

Multiple security issues have been found in the Mozilla Firefox web
browser, which could potentially result in the execution of arbitrary
code, sandbox escape or bypass of the same-origin policy.

For the oldstable distribution (bookworm), these problems have been fixed
in version 128.14.0esr-1~deb12u1.

For the stable distribution (trixie), these problems have been fixed in
version 128.14.0esr-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-2025-9179 CVE-2025-9180 CVE-2025-9181 CVE-2025-9185

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