Bug 2374554 (CVE-2025-6436) - CVE-2025-6436 firefox: Memory safety bugs fixed in Firefox 140 and Thunderbird 140
Summary: CVE-2025-6436 firefox: Memory safety bugs fixed in Firefox 140 and Thunderbir...
Keywords:
Status: NEW
Alias: CVE-2025-6436
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: 2025-06-24 13:01 UTC by OSIDB Bzimport
Modified: 2025-09-01 08:28 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2025-06-24 13:01:10 UTC 
Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 140.
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