Vulnerability · Published Oct 7, 2026 · Assigned by cisco
CVE-2026-76499Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities
Critical 9.8
In plain English
A critical-severity security flaw in Cisco Application Policy Infrastructure Controller (APIC) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Application Policy Infrastructure Controller (APIC) | 5.2(1g)5.2(2e)5.2(2f)5.2(2g)5.2(2h)5.2(3f)5.2(3e)5.2(3g) |
Weakness: CWE-707 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H