Vulnerability Monitor

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CVE-2025-8035

Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

Published

2025-07-22T21:15:50.660

Last Modified

2025-07-30T17:15:28.293

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

Weaknesses

Type: Secondary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 128.13.0	Yes
Application	mozilla	firefox	< 141.0	Yes
Application	mozilla	firefox	< 140.1.0	Yes
Application	mozilla	thunderbird	< 128.13.0	Yes
Application	mozilla	thunderbird	< 141.0	Yes
Application	mozilla	thunderbird	< 140.1.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1975961 ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-56/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-58/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-59/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-61/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-62/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-63/ Vendor Advisory ([email protected])