CVE-2026-76499

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

View on CVE.org

Published Oct 7, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

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-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.
 

Affected Products

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 Versions

Cisco

Application Policy Infrastructure Controller (apic)

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	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

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.

Exploit prediction score: < 1% (0.326% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh
https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification

History

Nov 7, 2026 6:30 PM Added references View changes

Type	Values Removed	Values Added
References		https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification

Oct 9, 2026 7:45 AM First appearance in the feed. Affected vendors updated View changes

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

Oct 7, 2026 7:30 PM Scoring metrics updated View changes

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

Oct 7, 2026 4:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

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-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.
Title		Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities
Weaknesses		CWE-707
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'}`