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CVE-2026-20200 is a high-severity argument injection vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC). The flaw is caused by improper validation of user-supplied input, allowing crafted input submitted through the management interface to be interpreted in a way that leads to command execution on the underlying operating system. Cisco states that a remote attacker with low-privilege authenticated access can exploit the issue to execute arbitrary commands and elevate privileges to root. The vulnerability affects Cisco IMC deployments used with standalone Cisco Unified Computing System platforms, including affected UCS C-Series server deployments.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Repository is a standalone Python proof-of-concept exploit for CVE-2026-20200 affecting Cisco CIMC/IMC. The main entry point is CIMCown.py, which orchestrates authentication, host/session enumeration, file upload/download, local payload building, and reverse-shell execution. authentication.py implements Cisco IMC login logic, including client-side password encryption and session extraction. util.py contains the core exploit primitives: authenticated POSTs to CIMC endpoints and crafted JSON-RPC payloads abusing the Redfish OEM action '/redfish/v1/AccountService/Accounts/2/Actions/Oem/ManagerAccount.UploadSSHKey' by injecting curl arguments into the KeyURI field. This enables three main capabilities: arbitrary file read (target POSTs local file contents to attacker HTTP server), arbitrary file write (target downloads attacker-hosted file to arbitrary path), and code execution (target curl loads a malicious shared library via '--engine'). fileserver.py provides a custom local HTTP server used to host payloads and receive exfiltrated files, including support for malformed/no-Content-Length POSTs from the target. The shell directory contains a Go reverse shell template that is rebuilt with attacker IP/port and cross-compiled for ARM; util.py also includes a helper to build an ARM shared object that executes '/tmp/main'. Overall, this is a real exploit repository with operational RCE and file-transfer functionality, not merely a detector.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An argument injection vulnerability in the web management interface of Cisco Integrated Management Controller (IMC) that could allow a low-privileged authenticated remote attacker to execute arbitrary commands with elevated privileges on the underlying operating system.
A critical authenticated remote command execution vulnerability in Cisco Integrated Management Controller (IMC) web interface that can allow low-privileged attackers to execute arbitrary commands as root on the underlying operating system.
A high-severity Cisco Integrated Management Controller vulnerability involving improper validation of user-supplied input that can allow authenticated remote command execution and root privilege gain.
An improper neutralization of parameter/argument delimiters vulnerability in Cisco Integrated Management Controller.
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Cross-references every affected SKU, including bundled OEM variants.
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