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.
Published: 2026-10-07
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Remote Arbitrary Command Execution
Action: Immediate Patch
AI Analysis

Impact

The vulnerability enables an authenticated attacker to inject arbitrary operating‑system commands through the web‑based management API of Cisco Application Policy Infrastructure Controller. By sending specially crafted input after authenticating, the attacker can execute commands with root privileges, potentially compromising confidentiality, integrity, and availability of the device and the network it controls. The weakness arises from insufficient input validation of command arguments, corresponding to CWE‑544.

Affected Systems

Cisco Application Policy Infrastructure Controller (APIC) is affected. No specific firmware or release numbers are listed in the advisory, so all versions of APIC remain potentially vulnerable until a patch is applied.

Risk and Exploitability

The vulnerability has a CVSS score of 6.5 and is not listed in the CISA KEV catalog. The EPSS score is not available, indicating no publicly known exploitation prevalence at the time of the advisory. To exploit the flaw, an attacker must first obtain valid administrative API credentials, implying the attack vector is authenticated, remote. Once authenticated, the attacker can deliver the payload and gain full root access to the underlying operating system. The lack of a publicly referenced exploit does not eliminate the risk, as the condition for exploitation is relatively low: only the requirement of administrative credentials and network access to the API endpoint.

Generated by OpenCVE AI on October 7, 2026 at 18:19 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Cisco patch that addresses the command injection flaw in the APIC API.
  • Limit API exposure by restricting it to trusted internal networks and enforcing strict network segmentation and firewall rules.
  • Enforce least‑privilege authentication; revoke or rotate administrative credentials regularly and monitor for anomalous API activity.

Generated by OpenCVE AI on October 7, 2026 at 18:19 UTC.

Tracking

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Advisories

No advisories yet.

History

Sun, 11 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco application Policy Infrastructure Controller (apic)
Vendors & Products Cisco
Cisco application Policy Infrastructure Controller (apic)

Thu, 08 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability
Weaknesses CWE-544
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Cisco Application Policy Infrastructure Controller (apic)
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-08T15:33:31.802Z

Reserved: 2025-10-08T11:59:15.411Z

Link: CVE-2026-20321

cve-icon Vulnrichment

Updated: 2026-10-08T15:33:28.662Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-07T17:16:55.013

Modified: 2026-10-08T20:08:45.857

Link: CVE-2026-20321

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-11T12:15:18Z

Weaknesses
  • CWE-544

    Missing Standardized Error Handling Mechanism