APIC / ACI 5.3 vulnerabilities
3 advisories affect Cisco APIC / ACI 5.3. Latest: October 7, 2026.
Running APIC / ACI 5.3 devices? Get an email when a new vulnerability comes out. Free, unsubscribe in one click.
Turn on APIC / ACI 5.3 alerts
Turn on APIC / ACI 5.3 alerts
| Vulnerability | Severity | Affected versions |
|---|---|---|
| Cisco Application Policy Infrastructure Controller Security Hardening Release: October 2026 CVE-2026-76498 +2 · October 7, 2026 | Critical 9.8 | 7 versions, from 5.3(1d) to 5.3(2f) |
| Cisco Application Policy Infrastructure Controller Unauthorized File Access Vulnerability CVE-2026-76488 · October 7, 2026 | Medium 6.5 | 7 versions, from 5.3(1d) to 5.3(2f) |
| Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability CVE-2026-20321 · October 7, 2026 | Medium 6.5 | 7 versions, from 5.3(1d) to 5.3(2f) |
Affected versions are compiled automatically from vendor advisories and NVD and may contain errors. Where no fixed version is shown, you will find it in the official advisory linked from every page: check it there before updating.