# CVE-2026-76500: Race condition in Cisco Application Policy Infrastructure Controller (APIC)

> Cisco APIC contains improper resource lifetime control vulnerabilities that could lead to denial of service or undefined behavior, requiring a security patch.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Oct 2026
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-jcgq-5qqq-gj2g

## What is CVE-2026-76500?

CVE-2026-76500 is a critical vulnerability in Cisco Application Policy Infrastructure Controller (APIC), published on 7 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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-2026-76500 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.

Weakness: CWE-664 (Improper Control of a Resource Through its Lifetime)

## Which versions are affected by CVE-2026-76500?


## How do I fix CVE-2026-76500?

No fix has been published for CVE-2026-76500 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76500 being exploited?

There is no known exploitation of CVE-2026-76500 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76500 and fix it if it is affected.

What it is: CVE-2026-76500 is a critical vulnerability in Cisco Application Policy Infrastructure Controller (APIC), published on 7 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-76500 in the wild and no public exploit code.

Affected product: Cisco Application Policy Infrastructure Controller (APIC). No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-76500/ (Markdown: https://insights.sbomify.com/CVE-2026-76500/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76500
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76500
- OSV: https://osv.dev/vulnerability/CVE-2026-76500

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76500/
Summaries are generated and may contain mistakes; the official description above is the record.