Bug 2403764 (CVE-2025-11719)

Summary: CVE-2025-11719 thunderbird: firefox: Use-after-free caused by the native messaging web extension API on Windows
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gotiwari, jgrulich, jhorak, mvyas, tpopela
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Thunderbird and Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Starting in Firefox 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption.
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Description OSIDB Bzimport 2025-10-14 13:01:46 UTC
Starting in Firefox 143, the use of the native messaging API by web extensions on Windows could lead to crashes caused by use-after-free memory corruption. This vulnerability affects Firefox < 144 and Thunderbird < 144.