# CVE-2026-76524: Open Source Snort 3 Control Channel Socket Aribitrary Command Execution Vulnerability


- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 21 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-4376-j46p-qqm7

## What is CVE-2026-76524?

CVE-2026-76524 is a high-severity vulnerability in Cisco Open Source Snort3, published on 21 Oct 2026. 

### Official description

A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user.

This vulnerability is due to a lack of authentication when a local user connects to the Snort control channel socket. An attacker could exploit this vulnerability by connecting to the Snort 3 control channel socket as a local user. A successful exploit could allow the attacker to execute arbitrary commands as well as read and write Snort 3 process memory.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-76524?


## How do I fix CVE-2026-76524?

No fix has been published for CVE-2026-76524 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76524 being exploited?

There is no known exploitation of CVE-2026-76524 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76524 and fix it if it is affected.

What it is: CVE-2026-76524 is a high-severity vulnerability in Cisco Open Source Snort3, published on 21 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-76524 in the wild and no public exploit code.

Affected product: Cisco Open Source Snort3. 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-2026-76524/ (Markdown: https://insights.sbomify.com/CVE-2026-76524/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76524
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76524
- OSV: https://osv.dev/vulnerability/CVE-2026-76524

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-76524/
Summaries are generated and may contain mistakes; the official description above is the record.