CVE-2026-76499
Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Timeline
ID reserved
By cisco
- 49 days later
· 49 days later
Published
- 31 days later
· 31 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.31% · top 76% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
Cisco · Cisco Application Policy Infrastructure Controller (APIC)
- affected 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)
- and 25 more
What to do
Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
References (2)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-76499)Record last updated .