Vulnerability Monitor

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CVE-2025-1943

Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 < 136 and Thunderbird < 136.

Published

2025-03-04T14:15:39.260

Last Modified

2025-04-03T13:30:58.727

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.2 (HIGH)

Weaknesses

Type: Secondary
CWE-122

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 136.0	Yes
Application	mozilla	thunderbird	< 136.0	Yes

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1869650%2C1938451%2C1940326%2C1944052%2C1944063%2C1947281 Broken Link ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-14/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-17/ Vendor Advisory ([email protected])