Linux · Security advisory · August 21, 2025

DLA-4277-1: firefox-esr security update

DLA-4277-1, released August 21, 2025, fixes 1 CVE in firefox-esr (version 128.14.0esr-1~deb11u1). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

HighUnsupported product
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0061
49th percentile

Fixed package versions

ProductReleaseFixed in
firefox-esrDebian 11.6 (bullseye)128.14.0esr-1~deb11u1

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
High CVE-2025-9179 Sandbox escape due to invalid pointer in the Audio/Video: GMP component 9.8 0.0061 None reported
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