Live › vulnerability › CVE-2026-117911
Go to dashboardA use-after-free bug in Firefox's Audio/Video Playback component frees memory that is still used later. An attacker who gets a user to load crafted media could potentially crash the browser or run code in it.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-27 14:32 UTC. All times on this page are UTC.
Anyone running Firefox builds from before the fixed versions, on desktop or in managed fleets that have not pushed the update. Systems on a fixed version are not affected. The sources do not say whether the bug is reachable without user interaction.
No product ranges from the sources yet.
firefox --version; affected builds are older than 159 on the main branch, 115.44 on ESR 115, and 153.6 on ESR 153.159 or later, or Firefox ESR to 115.44 or 153.6, depending on the channel in use.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.
This page as .md · .json · in your agent: get_signal("CVE-2026-117911")
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