CVE-2025-9181

Description

Uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 142, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.

References

https://www.mozilla.org/security/advisories/mfsa2025-72/

https://www.mozilla.org/security/advisories/mfsa2025-71/

https://www.mozilla.org/security/advisories/mfsa2025-70/

https://www.mozilla.org/security/advisories/mfsa2025-67/

https://www.mozilla.org/security/advisories/mfsa2025-66/

https://www.mozilla.org/security/advisories/mfsa2025-64/

https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html

https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1977130

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS