CVE-2026-20200

HIGH

Cisco Integrated Management Controller Argument Injection and Remote Code Execution Vulnerability

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-20200. PoCs published by NSIDE-ATTACK-LOGIC.

AI-analyzed exploit summary This exploit targets CVE-2026-20200, an argument injection vulnerability in Cisco Integrated Management Controller (CIMC) that allows remote code execution. The PoC leverages crafted JSON-RPC requests to upload and execute malicious libraries/binaries via the Redfish API, achieving arbitrary file read/write and command execution.

Description

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with low privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user. 

Exploits (1)

github WORKING POC
by NSIDE-ATTACK-LOGIC · pythonpoc
https://github.com/NSIDE-ATTACK-LOGIC/CIMCown

This exploit targets CVE-2026-20200, an argument injection vulnerability in Cisco Integrated Management Controller (CIMC) that allows remote code execution. The PoC leverages crafted JSON-RPC requests to upload and execute malicious libraries/binaries via the Redfish API, achieving arbitrary file read/write and command execution.

Classification
Working Poc 98%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Cisco Integrated Management Controller (CIMC)
Auth required
Prerequisites: Valid admin credentials for the CIMC interface · Network access to the CIMC web interface (default HTTPS) · Cross-compilation tools (Golang, arm-linux-gnueabihf-gcc) for payload generation
mistral-large-3 · analyzed Aug 05, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 8.8
EPSS 0.0084
EPSS Percentile 54.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-141
Status published
Products (38)
Cisco/Cisco Unified Computing System (Standalone) 4.3(1.230097)
Cisco/Cisco Unified Computing System (Standalone) 4.3(1.230124)
Cisco/Cisco Unified Computing System (Standalone) 4.3(1.230138)
Cisco/Cisco Unified Computing System (Standalone) 4.3(2.230207)
Cisco/Cisco Unified Computing System (Standalone) 4.3(2.230270)
Cisco/Cisco Unified Computing System (Standalone) 4.3(2.240002)
Cisco/Cisco Unified Computing System (Standalone) 4.3(3.240022)
Cisco/Cisco Unified Computing System (Standalone) 4.3(3.240043)
Cisco/Cisco Unified Computing System (Standalone) 4.3(4.240142)
Cisco/Cisco Unified Computing System (Standalone) 4.3(4.240152)
... and 28 more
Published Aug 05, 2026
Tracked Since Aug 05, 2026