CVE-2026-76498 - Vulnerability Details

- Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Access Control Vulnerabilities

Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-76498 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Published: 2026-10-07

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The vulnerability in the Cisco APIC is classified under CWE-284, indicating improper access control. The advisory describes that the issue allows users to access functions or resources to which they should not be granted permission. The CVE does not specify the exact modifications or disclosures that may result from this flaw.

Affected Systems

The affected product is Cisco’s Application Policy Infrastructure Controller (APIC). No specific version ranges are listed in the advisory, so all APIC deployments may be vulnerable until the hardening release is applied.

Risk and Exploitability

The CVSS score of 9.8 marks this issue as critical. The EPSS score is currently unavailable, so a precise exploitation probability cannot be quantified. The vulnerability is not listed in the CISA KEV catalog. No specific attack vector was disclosed in the advisory; the potential for exploitation remains unknown beyond the severity assessment.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Cisco

Cisco Application Policy Infrastructure Controller (APIC)

unknown

Version	Status	Constraints
`5.2(1g)`	affected	—
`5.2(2e)`	affected	—
`5.2(2f)`	affected	—
`5.2(2g)`	affected	—
`5.2(2h)`	affected	—
`5.2(3f)`	affected	—
`5.2(3e)`	affected	—
`5.2(3g)`	affected	—
`5.2(4d)`	affected	—
`5.2(4e)`	affected	—
`5.2(5d)`	affected	—
`5.2(5c)`	affected	—
`6.0(1g)`	affected	—
`5.2(5e)`	affected	—
`5.2(4f)`	affected	—
`5.2(6e)`	affected	—
`6.0(1j)`	affected	—
`5.2(6g)`	affected	—
`5.2(7f)`	affected	—
`5.2(7g)`	affected	—
`6.0(2h)`	affected	—
`5.2(6h)`	affected	—
`5.2(4h)`	affected	—
`5.2(8d)`	affected	—
`6.0(2j)`	affected	—
`5.2(8e)`	affected	—
`6.0(3d)`	affected	—
`6.0(3e)`	affected	—
`5.2(8f)`	affected	—
`5.2(8g)`	affected	—
`5.3(1d)`	affected	—
`5.2(8h)`	affected	—
`6.0(4c)`	affected	—
`5.3(2a)`	affected	—
`5.2(8i)`	affected	—
`6.0(5h)`	affected	—
`5.3(2b)`	affected	—
`6.0(3g)`	affected	—
`6.0(5j)`	affected	—
`5.3(2c)`	affected	—
`6.0(6c)`	affected	—
`6.1(1f)`	affected	—
`6.0(7e)`	affected	—
`5.3(2d)`	affected	—
`6.0(8d)`	affected	—
`6.0(8e)`	affected	—
`6.1(2f)`	affected	—
`6.0(8f)`	affected	—
`5.3(2e)`	affected	—
`6.1(2g)`	affected	—
`5.3(2f)`	affected	—
`6.0(9c)`	affected	—
`6.1(3f)`	affected	—
`6.0(9d)`	affected	—
`6.0(6g)`	affected	—
`6.0(6h)`	affected	—
`6.0(8h)`	affected	—
`6.1(3g)`	affected	—
`6.1(4h)`	affected	—
`6.0(9e)`	affected	—
`6.1(5e)`	affected	—
`6.2(1f)`	affected	—
`6.2(1g)`	affected	—
`6.0(9f)`	affected	—
`6.2(2e)`	affected	—

No data.

Vendor Product Confidence Versions

Cisco

Application Policy Infrastructure Controller (apic)

95%

Version	Status	Scheme	Platform
`5.2(1g)`	affected	generic	—
`5.2(2e)`	affected	generic	—
`5.2(2f)`	affected	generic	—
`5.2(2g)`	affected	generic	—
`5.2(2h)`	affected	generic	—
`5.2(3f)`	affected	generic	—
`5.2(3e)`	affected	generic	—
`5.2(3g)`	affected	generic	—
`5.2(4d)`	affected	generic	—
`5.2(4e)`	affected	generic	—
`5.2(5d)`	affected	generic	—
`5.2(5c)`	affected	generic	—
`6.0(1g)`	affected	generic	—
`5.2(5e)`	affected	generic	—
`5.2(4f)`	affected	generic	—
`5.2(6e)`	affected	generic	—
`6.0(1j)`	affected	generic	—
`5.2(6g)`	affected	generic	—
`5.2(7f)`	affected	generic	—
`5.2(7g)`	affected	generic	—
`6.0(2h)`	affected	generic	—
`5.2(6h)`	affected	generic	—
`5.2(4h)`	affected	generic	—
`5.2(8d)`	affected	generic	—
`6.0(2j)`	affected	generic	—
`5.2(8e)`	affected	generic	—
`6.0(3d)`	affected	generic	—
`6.0(3e)`	affected	generic	—
`5.2(8f)`	affected	generic	—
`5.2(8g)`	affected	generic	—
`5.3(1d)`	affected	generic	—
`5.2(8h)`	affected	generic	—
`6.0(4c)`	affected	generic	—
`5.3(2a)`	affected	generic	—
`5.2(8i)`	affected	generic	—
`6.0(5h)`	affected	generic	—
`5.3(2b)`	affected	generic	—
`6.0(3g)`	affected	generic	—
`6.0(5j)`	affected	generic	—
`5.3(2c)`	affected	generic	—
`6.0(6c)`	affected	generic	—
`6.1(1f)`	affected	generic	—
`6.0(7e)`	affected	generic	—
`5.3(2d)`	affected	generic	—
`6.0(8d)`	affected	generic	—
`6.0(8e)`	affected	generic	—
`6.1(2f)`	affected	generic	—
`6.0(8f)`	affected	generic	—
`5.3(2e)`	affected	generic	—
`6.1(2g)`	affected	generic	—
`5.3(2f)`	affected	generic	—
`6.0(9c)`	affected	generic	—
`6.1(3f)`	affected	generic	—
`6.0(9d)`	affected	generic	—
`6.0(6g)`	affected	generic	—
`6.0(6h)`	affected	generic	—
`6.0(8h)`	affected	generic	—
`6.1(3g)`	affected	generic	—
`6.1(4h)`	affected	generic	—
`6.0(9e)`	affected	generic	—
`6.1(5e)`	affected	generic	—
`6.2(1f)`	affected	generic	—
`6.2(1g)`	affected	generic	—
`6.0(9f)`	affected	generic	—
`6.2(2e)`	affected	generic	—

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Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply the latest Cisco APIC hardening release as specified in the Cisco security advisory.
Restrict administrative access to the APIC interfaces to trusted networks or IP ranges.
Monitor APIC audit logs for unauthorized configuration changes or suspicious activity.

Generated by OpenCVE AI on October 7, 2026 at 18:59 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00301.

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh

History

Fri, 09 Oct 2026 07:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco application Policy Infrastructure Controller (apic)
Vendors & Products		Cisco Cisco application Policy Infrastructure Controller (apic)

Wed, 07 Oct 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Wed, 07 Oct 2026 16:30:00 +0000

Type	Values Removed	Values Added
Description		As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76498 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.
Title		Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Access Control Vulnerabilities
Weaknesses		CWE-284
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}`

Subscriptions

Cisco Application Policy Infrastructure Controller (apic)

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-10-07T16:17:25.677Z

Updated: 2026-10-07T18:05:21.481Z

Reserved: 2026-08-19T12:02:03.641Z

Link: CVE-2026-76498

Vulnrichment

Updated: 2026-10-07T18:03:48.970Z

NVD

Status : Awaiting Analysis

Published: 2026-10-07T17:17:01.670

Modified: 2026-10-08T20:08:45.857

Link: CVE-2026-76498

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-10-09T07:30:17Z

Weaknesses

CWE-284
Improper Access Control

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Exploitation none

Automatable yes

Technical Impact total

Subscriptions

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