Detections
Analytics

Cisco Application Policy Infrastructure Controller API Command Injection (cisco-sa-apic-cmdinj-L6VR4E7)

medium Nessus Plugin ID 364471

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco Application Policy Infrastructure Controller (APIC) is affected by a vulnerability.

 - A command injection vulnerability exists in the web-based management API due to insufficient input validation of user-controlled command arguments. An authenticated, remote attacker can exploit this, by sending a specially crafted request, to execute arbitrary commands as root on the underlying operating system.
 (CVE-2026-20321)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwv43177

See Also

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwv43177

http://www.nessus.org/u?41f0d7cf

Plugin Details

Severity: Medium

ID: 364471

File Name: cisco-sa-apic-cmdinj-L6VR4E7.nasl

Version: 1.1

Type: Remote

Family: CISCO

Published: 10/9/2026

Updated: 10/9/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.44

CVSS v2

Risk Factor: High

Base Score: 7.7

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:N

CVSS Score Source: CVE-2026-20321

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Vulnerability Information

CPE: cpe:/a:cisco:application_policy_infrastructure_controller

Required KB Items: installed_sw/Cisco APIC Software

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 10/7/2026

Reference Information

CVE: CVE-2026-20321

CWE: 544

CISCO-SA: cisco-sa-apic-cmdinj-L6VR4E7

IAVA: 2026-A-1089

CISCO-BUG-ID: CSCwv43177