Firefox — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
157
occurrences
First Seen
November 12, 2025
Last Seen
August 31, 2026

Related Threat Clusters

Recent Intelligence Reports

  • New RevStealer malware spreads as fake Claude Opus 5 desktop app — Cyberinsider · August 31, 2026
  • Oracle Linux Firefox Important Buffer Overflow Vuln ELSA-2026 — Linuxsecurity · August 26, 2026
  • AliExpress accused of fingerprinting shoppers with silent audio trick that also muted a dev's headphones — Theregister · August 24, 2026
  • Network of 77 Firefox extensions linked to crypto theft uncovered — Feeds.Feedburner · August 21, 2026
  • CISA gives feds 3 days to fix actively exploited Ray RCE bug — Theregister · August 18, 2026
  • Symantec published August 13, 2026 — www.security.com · August 16, 2026
  • 4 Outdated Cybersecurity Tips That No Longer Keep You Safe — Aol · August 15, 2026
  • Researchers Link 'Jewelbug' Chinese APT to Hack-for — Infosecurity-Magazine · August 14, 2026

CVSS v3.1 Breakdown