How we count
Every figure on this page is a direct count of entries in CISA’s Known Exploited Vulnerabilities catalog attributed by CISA to Accellion (KEV field vendorProject), refreshed daily. “Ransomware-linked” counts entries CISA marks as known to be used in ransomware campaigns; the remainder are “unknown” to CISA, not confirmed ransomware-free. A KEV listing means the vulnerability has been observed exploited in the wild. Snapshot as of 2026-09-02.
Exploited Accellion vulnerabilities (CISA KEV)
| CVE | Product | Vulnerability | Added | |
|---|---|---|---|---|
| CVE-2021-27104 | FTA | Accellion FTA OS Command Injection Vulnerability | 2021-11-03 | ransomware |
| CVE-2021-27102 | FTA | Accellion FTA OS Command Injection Vulnerability | 2021-11-03 | ransomware |
| CVE-2021-27101 | FTA | Accellion FTA SQL Injection Vulnerability | 2021-11-03 | ransomware |
| CVE-2021-27103 | FTA | Accellion FTA Server-Side Request Forgery (SSRF) Vulnerability | 2021-11-03 | ransomware |
← All vendors by exploited-vulnerability count
🤖 Generated by defend.network from the CISA KEV catalog. Counts are deterministic aggregates of official CISA data; verify individual advisories at the linked sources.