Cisco Application Policy Infrastructure Controller Unauthorized File Access Vulnerability

Description

A vulnerability in the export policies functionality of Cisco Application Policy Infrastructure Controller (APIC) could allow an authenticated, remote attacker to access sensitive files on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient access control to file system resources. An attacker could exploit this vulnerability by submitting crafted values in specific UI fields. A successful exploit could allow the attacker to access sensitive files from the underlying file system of an affected device, including key materials that could be used to elevate privileges to root on the affected APIC and on managed switches. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apic-info-priv-enAdB5vD This advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of October 7, 2026, Security Advisories . For further documentation of improvements and fixes in Cisco APIC, see Cisco Application Policy Infrastructure Controller Security Hardening Release: October 2026 . Security Impact Rating: Medium CVE: CVE-2026-76488

What to do

Install the fixed versions listed in the official advisory. If you cannot update right away, apply the workarounds or mitigations it describes and limit access to the affected service.

Details

Vendor

Cisco

Product

Cisco APIC

CVE

CVE-2026-76488

Affected versions

Cisco Application Policy Infrastructure Controller (APIC) 5.2: 26 versions, from 5.2(1g) to 5.2(8i)
Cisco Application Policy Infrastructure Controller (APIC) 6.0: 22 versions, from 6.0(1g) to 6.0(9f)
Cisco Application Policy Infrastructure Controller (APIC) 5.3: 7 versions, from 5.3(1d) to 5.3(2f)
Cisco Application Policy Infrastructure Controller (APIC) 6.1: 6.1(1f); 6.1(2f); 6.1(2g) (from the advisory and NVD; check the exact builds in the official advisory)

CVSS score

6.5

Actively exploited

Not known at this time

Source

Cisco PSIRT – original advisory

Published

October 7, 2026

The description and the recommended action are quoted from the public advisory (the action is our generic advice); severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.