CVE-2026-20288
Cisco IMC Remote Code Execution Vulnerability Remote Code Execution Vulnerability
Description
A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin 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. Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.
Weakness: CWE-146
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Enterprise NFV Infrastructure Software | Routing & Switching | cna-assigner |
| Cisco | Cisco Unified Computing System (UCS) | Other Products | cna-assigner |
Vendor-reported products (3)
- Cisco · Cisco Enterprise NFV Infrastructure Software
- Cisco · Cisco Unified Computing System (Standalone)
- Cisco · Cisco Unified Computing System E-Series Software (UCSE)
Vendor advisory
cisco-sa-cimc-arg-inject-upSHdMfU
Cisco Integrated Management Controller Argument Injection Vulnerabilities
Cisco’s rating: High (advisory CVSS 8.8) · Published Aug 5, 2026 · updated Sep 15, 2026 (revision 1.1)
Bug IDs: CSCwt16342 , CSCwt45063 , CSCwu57141 , CSCwu57142
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from