OS Command Injection in Accellion FTA admin endpoints
CVE-2021-27104 is an operating system command injection vulnerability in Accellion File Transfer Appliance (FTA). According to the provided content, the flaw affects FTA 9_12_370 and earlier and can be triggered via a crafted POST request sent to various FTA administrative endpoints. Multiple sources in the content characterize the issue as remotely exploitable and unauthenticated. Successful exploitation causes attacker-controlled input to be executed as OS commands on the underlying appliance. The vulnerability was one of several Accellion FTA flaws exploited in real-world intrusions associated with data theft campaigns.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical command execution vulnerability in Accellion FTA via a crafted POST request.
Unauthenticated remote OS command injection in Accellion FTA via crafted POST requests to an administrative endpoint, potentially enabling remote code execution and data exfiltration.
An Accellion File Transfer Appliance vulnerability listed among 2021 CVEs known to be exploited.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.