CVE-2025-1930: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-after-free in the Browser process. This could have led to a sandbox escape. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

Affected products

• Mozilla Firefox: before 115.21.0 (fixed in 115.21.0); before 136.0 (fixed in 136.0); from 116.0, before 128.8.0 (fixed in 128.8.0)
• Mozilla Thunderbird: before 128.8 (fixed in 128.8); after 1.28.8, before 136.0 (fixed in 136.0)

Published 2025-03-04. Last modified 2026-10-05.