Critical severity · published Oct 7, 2026
CVE-2026-76499
Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities
9.8
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Cisco Application Policy Infrastructure Controller (APIC) · Cisco
5.2(1g); 5.2(2e); 5.2(2f); 5.2(2g); 5.2(2h); 5.2(3f); +34 more · source: vendor
Affected product
CA
Cisco Application Policy Infrastructure Controller (APIC)
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76499
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76499
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh
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