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8.1 High

CVE-2025-9184 Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141

Description

Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 was fixed in Firefox 142, Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2.

Affected products and versions

Product Affected versions Fixed in
Firefox 142 earliest → < 142 142
Firefox 140.2 earliest → < 140.2 140.2
Firefox ESR 140.2 earliest → < 140.2 140.2
Thunderbird 142 earliest → < 142 142
Thunderbird 140.2 earliest → < 140.2 140.2

References

Timeline

  1. Published
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