Bug 2374557 (CVE-2025-6435) - CVE-2025-6435 firefox: Save as in Devtools could download files without sanitizing the extension
Summary: CVE-2025-6435 firefox: Save as in Devtools could download files without sanit...
Keywords:
Status: NEW
Alias: CVE-2025-6435
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
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: 2025-06-25 12:50 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2025-06-24 13:01:18 UTC 
If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. This vulnerability affects Firefox < 140.
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