CVE-2026-20321
Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability
Description
A vulnerability in the web-based management API for Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attacker to execute arbitrary commands as the root user. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient input validation of user-controlled command arguments. An attacker could exploit this vulnerability by authenticating using the API and sending crafted input. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system of an affected device with root-level privileges.
Weakness: CWE-544
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Application Policy Infrastructure Controller (APIC) | Network & Security Management | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Application Policy Infrastructure Controller (APIC)
Vendor advisory
Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability
Cisco’s rating: Medium (advisory CVSS 6.5) · Published Oct 7, 2026
Bug ID: CSCwv43177
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from