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CVE-2021-27101 is an unauthenticated SQL injection vulnerability in Accellion File Transfer Appliance (FTA) 9_12_370 and earlier. A remote attacker can inject SQL through a crafted HTTP Host header submitted to a vulnerable web endpoint. Exploitation can expose database information and security tokens; observed attacks enabled remote command execution and deployment of the DEWMODE web shell. The vulnerability was exploited in campaigns that also used other Accellion FTA vulnerabilities. FTA_9_12_380 and later fix this specific flaw.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This 13-file Python PoC suite is centered on CVE-2014-9222 (Misfortune Cookie) in AllegroSoft RomPager, with an interactive console in main.py and standalone modules for fingerprinting, detection, authentication bypass, and denial of service. common.py contains a per-device realm-to-cookie-offset table covering multiple Billion, D-Link, TP-Link, Zyxel, and Azmoon models. The RomPager detector sends a canary cookie to confirm request-URI corruption; auth_bypass.py uses firmware-specific magic cookies to write authentication state; dos.py sends oversized Cookie headers and polls for a watchdog reboot. The suite also includes operational exploit modules for Accellion FTA CVE-2021-27101/27102 (Host-header SQLi to recover a secret, then write/verify a PHP webshell), Huawei HG532 CVE-2017-17215 (SOAP command injection), and MikroTik WinBox CVE-2018-14847 (directory traversal file read and credential decryption). scan.py combines service probes, although its WinBox check performs an actual credential-store read rather than a purely passive fingerprint.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated SQL injection vulnerability in Accellion FTA triggered through a crafted Host header. Cl0p chained it with three other vulnerabilities to deploy DEWMODE and steal files during its 2020–2021 extortion campaign.
A previously exploited vulnerability referenced only as historical context for Clop’s past mass-exploitation and custom web shell activity.
A previously exploited Accellion vulnerability mentioned as historical background for Clop's earlier campaigns.
A previously exploited SQL injection vulnerability referenced as part of Clop's historical mass-exploitation playbook.
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.