CVE-2021-27101
Published: November 3, 2021
Official Description
Accellion FTA contains a SQL injection vulnerability exploited via a crafted host header in a request to document_root.html.
CISA KEV Advisory
Accellion FTA SQL Injection Vulnerability
Accellion FTA contains a SQL injection vulnerability exploited via a crafted host header in a request to document_root.html.
Apply updates per vendor instructions.
Risk Analysis
This SQL injection vulnerability in Accellion FTA is exploited via a crafted host header in a request to document_root.html. This flaw could allow an attacker to access or manipulate database information. Its inclusion in CISA's KEV catalog confirms active exploitation, making this an urgent concern.
Active exploitation of this vulnerability has been observed in the wild. This vulnerability is remotely exploitable via a crafted HTTP request.
Organizations using Accellion FTA should apply the latest security patches immediately. Implement robust input validation and web application firewalls to prevent SQL injection attacks.
Technical Analysis
CVE-2021-27101 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-2021-27101 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-2021-27101 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