Cisco Application Policy Infrastructure Controller Security Hardening Release: October 2026 (cisco-sa-hardening-apic-UOXWtfh)

critical Nessus Plugin ID 364489

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 multiple vulnerabilities.

- An input validation vulnerability exists in Cisco Application Policy Infrastructure Controller (APIC) due to improper neutralization of user-supplied input. An authenticated, remote attacker can exploit this, via a specially crafted request, to cause an unspecified impact on the affected device. (CVE-2026-76499)

- A privilege escalation vulnerability exists in Cisco Application Policy Infrastructure Controller (APIC) due to improper access control. An authenticated, remote attacker can exploit this, via a specially crafted request, to gain elevated privileges on the affected device. (CVE-2026-76498)

- A vulnerability exists in Cisco Application Policy Infrastructure Controller (APIC) due to improper control of a resource through its lifetime. An authenticated, remote attacker can exploit this, via a specially crafted request, to cause an unspecified impact on the affected device. (CVE-2026-76500)

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

Solution

Upgrade to the relevant fixed version referenced in Cisco Security Advisory cisco-sa-hardening-apic-UOXWtfh.

See Also

http://www.nessus.org/u?0fbb7c40

Plugin Details

Severity: Critical

ID: 364489

File Name: cisco-sa-hardening-apic-UOXWtfh.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: 4.9

Percentile: 58.38

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-76499

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

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-2026-76498, CVE-2026-76499, CVE-2026-76500

CWE: 284, 664, 707

CISCO-SA: cisco-sa-hardening-apic-UOXWtfh

IAVA: 2026-A-1089