Zen-browser vulnerabilities
We track 1 vulnerability in Zen-browser products. 1 is rated high or critical, and none are known to be exploited. The most recent was published on May 11, 2026.
1vulnerabilities
0critical
1high
0exploited
8.0average CVSS score
Latest Zen-browser vulnerabilities
- 8.0 High severity
desktop: Improper Verification of Cryptographic Signature
Zen is a firefox-based browser. Prior to 1.19.9b, Zen Browser ships a Mozilla Application Resource (MAR) updater (org.mozilla.updater) that has had all MAR signature verification stripped from the Firefox codebase it was forked from. The MAR files served to us