CVE-2021-27102
Published: November 3, 2021
Official Description
Accellion FTA contains an OS command injection vulnerability exploited via a local web service call.
CISA KEV Advisory
Accellion FTA OS Command Injection Vulnerability
Accellion FTA contains an OS command injection vulnerability exploited via a local web service call.
Apply updates per vendor instructions.
Risk Analysis
This vulnerability in Accellion FTA allows for OS command injection through a local web service call. The high severity and confirmed exploitation in the wild make this an urgent concern.
This vulnerability is actively being exploited in the wild.
Apply all available security updates for Accellion FTA to address this OS command injection vulnerability. Ensure that your web services are properly secured and restrict access to local web service calls.
Technical Analysis
CVE-2021-27102 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2021-27102 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-27102 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1