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Case File

CVE-2021-29978

CRITICAL · CVSS 9.8 EPSS 2.78% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-05 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-29978
Severity
CRITICAL
CVSS
9.8
EPSS
2.78%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-92240 CRITICAL CVE-2026-92239 HIGH CVE-2026-92238 CRITICAL CVE-2026-84642 HIGH CVE-2026-84641 HIGH CVE-2026-84640 HIGH