CVE-2026-20107 Cisco Application Policy Infrastructure Controller Denial of Service Vulnerability
An authenticated local attacker can cause a Cisco APIC device to reload unexpectedly via crafted CLI commands, resulting in a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20107?
CVE-2026-20107 is a medium-severity denial of service vulnerability in Cisco Application Policy Infrastructure Controller (APIC), published on 25 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Object Model CLI component of Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, local attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. To exploit this vulnerability, the attacker must have valid user credentials and any role that includes CLI access. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by issuing crafted commands at the CLI prompt. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Weakness: CWE-1220
Which versions are affected by CVE-2026-20107?
How do I fix CVE-2026-20107?
No fix has been published for CVE-2026-20107 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-20107 being exploited?
There is no known exploitation of CVE-2026-20107 in the wild and no public exploit code.
Sources
Also known as GHSA-gv9w-2wpq-7538.