Command Injection Vulnerability in Cisco Application Policy Infrastructure Controller
CVE-2026-20321

6.5MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Application Policy Infrastructure Controller (apic)
Vendor
CVE Published:
7 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-20321?

The Cisco Application Policy Infrastructure Controller (APIC) contains a command injection vulnerability within its web-based management API. This flaw enables an authenticated, remote attacker to execute arbitrary commands as the root user. The vulnerability arises from inadequate input validation of user-controlled command arguments. By authenticating through the API and providing specially crafted inputs, an attacker could leverage this vulnerability to gain root-level access and execute commands on the underlying operating system of affected devices.

Affected Version(s)

Cisco Application Policy Infrastructure Controller (APIC) 5.3(1d)

Cisco Application Policy Infrastructure Controller (APIC) 5.3(2a)

Cisco Application Policy Infrastructure Controller (APIC) 5.3(2b)

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.