Intel

CVE-2026-76499

Application Policy Infrastructure Controller: Improper Neutralization (CVE-2026-76499)

criticalEPSS 0.3%

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.  

Source: cisco_csafNVD (NIST)BSI CSAFBSI WID Portalcvelistv5CVE.org (MITRE)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

CiscoApplication Policy Infrastructure Controller
< 6.0(9h)fixed in 6.0(9h)< 6.1(3f)fixed in 6.1(3f)< 6.1(6g)fixed in 6.1(6g)< 6.2(3g)fixed in 6.2(3g)

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
21.6 %
Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
critical
Priority score
82.74
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
0.3 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-10-07 17:17 UTC
CWE
CWE-707

Weakness classes (CWE)

  • CWE-707Pillar

    Improper Neutralization

    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.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-10-07 18:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-76499","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…
  2. New CVE Received2026-10-07 17:17 UTC· psirt@cisco.com
    • 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. &nbsp;
    • CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    • CWE: CWE-707
    • Affected: New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/76xxx/CVE-2026-76499.json">CVE-2026-76499</a>

Linked advisories