Bug 2517867 (CVE-2026-74988) - CVE-2026-74988 firefox: thunderbird: Internally found bugs fixed in Firefox ESR 153.1 and Firefox 154
Summary: CVE-2026-74988 firefox: thunderbird: Internally found bugs fixed in Firefox E...
Keywords:
Status: NEW
Alias: CVE-2026-74988
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-18 12:56 UTC by OSIDB Bzimport
Modified: 2026-08-20 23:00 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-18 12:56:38 UTC 
Internally found bugs present in Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
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