Live › vulnerability › CVE-2026-117863
Go to dashboardFirefox's Audio/Video component can expose uninitialized memory, which can leak fragments of other process data. The sources do not describe the exact trigger, so the attacker's reach beyond information disclosure is unknown.
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 a Firefox build older than the fixed versions, including ESR installs on 115 and 153 branches. The sources do not say whether a specific configuration or media setting is required, so the exposure window is unknown. Teams that only use managed browsers with automatic updates are likely covered once updates have rolled out.
No product ranges from the sources yet.
firefox --version (or check the About Firefox page) and compare against the fixed versions115.44 or 153.6 or later159 or later115.44 or later153.6 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Information disclosure due to uninitialized memory in the Audio/Video 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-2026-117863")
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