CVE-2026-76499
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Publication date: 2026-10-07

Last updated on: 2026-11-07

Assigner: Cisco Systems, Inc.

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.  

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-07
Last Modified
2026-11-07
Generated
2026-11-08
AI Q&A
2026-10-07
EPSS Evaluated
2026-11-07
NVD
CVE-2026-76499
EUVD
EUVD-2026-94471

Affected Vendors & Products

Showing 65 associated CPEs
Vendor Product Version / Range
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(1g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(2e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(2f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(2g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(2h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(3f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(3e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(3g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(4d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(4e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(5d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(5c)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(1g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(5e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(4f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(6e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(1j)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(6g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(7f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(7g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(2h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(6h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(4h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(2j)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(3d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(3e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(1d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(4c)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2a)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.2(8i)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(5h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2b)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(3g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(5j)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2c)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(6c)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(1f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(7e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(8d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(8e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(2f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(8f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(2g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 5.3(2f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(9c)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(3f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(9d)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(6g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(6h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(8h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(3g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(4h)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(9e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.1(5e)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.2(1f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.2(1g)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.0(9f)
Cisco Cisco Application Policy Infrastructure Controller (APIC) 6.2(2e)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-707 The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-76499 is a vulnerability in Cisco's Application Policy Infrastructure Controller (APIC) related to improper neutralization issues classified under CWE-707. This means the software fails to properly neutralize user input, potentially allowing malicious input to alter intended behavior.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying CVE-2026-76499 on a network or system. Cisco's advisory for similar vulnerabilities suggests checking software versions against fixed releases like 6.0(9h), 6.1(6g), or 6.2(3g) or later.

Impact Analysis

This vulnerability could allow attackers to execute arbitrary code, gain unauthorized access, or disrupt services by exploiting improper input handling in Cisco APIC. The high CVSS score (9.8) indicates severe impact, including confidentiality, integrity, and availability breaches.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with GDPR, HIPAA, or other standards. The vulnerability involves improper neutralization issues (CWE-707) in Cisco APIC, which could potentially lead to unauthorized access or data breaches, indirectly affecting compliance if exploited.

Mitigation Strategies

Apply the latest security patches from Cisco for the APIC software to address the improper neutralization vulnerabilities. Monitor Cisco's security advisories for updates and follow their hardening recommendations.

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