CVE-2025-8033 | THREATINT

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Description

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.

Reserved 2025-07-22 | Published 2025-07-22 | Updated 2025-07-22 | Assigner mozilla

Problem types

Incorrect JavaScript state machine for generators

Product status

Any version before 141

affected

Any version before 115.26

affected

Any version before 128.13

affected

Any version before 140.1

affected

Any version before 141

affected

Any version before 128.13

affected

Any version before 140.1

affected

Credits

Shaheen Fazim

References

bugzilla.mozilla.org/show_bug.cgi?id=1973990

www.mozilla.org/security/advisories/mfsa2025-56/

www.mozilla.org/security/advisories/mfsa2025-57/

www.mozilla.org/security/advisories/mfsa2025-58/

www.mozilla.org/security/advisories/mfsa2025-59/

www.mozilla.org/security/advisories/mfsa2025-61/

www.mozilla.org/security/advisories/mfsa2025-62/

www.mozilla.org/security/advisories/mfsa2025-63/

cve.org (CVE-2025-8033)

nvd.nist.gov (CVE-2025-8033)

Download JSON

https://cve.threatint.eu/CVE/CVE-2025-8033

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