CVE-2021-29978: Mozilla VPN

Critical severity, CVSS 9.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN < 2.3.

Affected products

• Mozilla Mozilla VPN: from 2.0, before 2.3 (fixed in 2.3)

Published 2021-08-05. Last modified 2026-06-17.