CVE-2025-10534

high

Description

This vulnerability affects Firefox < 143 and Thunderbird < 143.

References

https://www.mozilla.org/security/advisories/mfsa2025-77/

https://www.mozilla.org/security/advisories/mfsa2025-73/

https://bugzilla.mozilla.org/show_bug.cgi?id=1665334

Details

Source: Mitre, NVD

Published: 2025-09-16

Updated: 2025-09-19

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.00017