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CVE-2026-117905

Medium

Description

Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.

SeverityMedium
CVSS6.3
Exploit probability20. percentile0.3%
ProductFirefox
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-416Use after free

How to fix

Update
  • Mozilla Firefox159 or later
  • Mozilla Firefox ESR153.6 or later
  • Mozilla Thunderbird153.6 or later

Affected products

ProductAffected versionsFixed in
Mozilla FirefoxNo range specified159
Mozilla Firefox ESRNo range specified153.6
Mozilla ThunderbirdNo range specified153.6

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