CVE-2025-1010: An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability affects...

Description

An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.

Classification

CVE ID: CVE-2025-1010

Affected Products

Vendor: Mozilla

Product: Firefox

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.08% (probability of being exploited)

EPSS Percentile: 38.55% (scored less or equal to compared to others)

EPSS Date: 2025-03-05 (when was this score calculated)

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1936982
https://www.mozilla.org/security/advisories/mfsa2025-07/
https://www.mozilla.org/security/advisories/mfsa2025-08/
https://www.mozilla.org/security/advisories/mfsa2025-09/
https://www.mozilla.org/security/advisories/mfsa2025-10/
https://www.mozilla.org/security/advisories/mfsa2025-11/

Timeline