Vulnerability Monitor

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CVE-2025-8033

The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

Published

2025-07-22T21:15:50.457

Last Modified

2025-07-28T18:42:05.727

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses

Type: Secondary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 115.26.0	Yes
Application	mozilla	firefox	< 141.0	Yes
Application	mozilla	firefox	< 128.13.0	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=1973990 Permissions Required ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-56/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2025-57/ 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])