CVE-2026-76524
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Command Injection in Snort 3 Control Channel
Vulnerability report for CVE-2026-76524, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-21
Last updated on: 2026-10-21
Assigner: Cisco Systems, Inc.
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Cisco | Cisco | Open Source Snort3 3.12.2.0 |
| Cisco | Cisco | Open Source Snort3 3.1.2.0 |
| Cisco | Cisco | Open Source Snort3 3.1.3.0 |
| Cisco | Cisco | Open Source Snort3 3.1.4.0 |
| Cisco | Cisco | Open Source Snort3 3.1.5.0 |
| Cisco | Cisco | Open Source Snort3 3.1.6.0 |
| Cisco | Cisco | Open Source Snort3 3.1.7.0 |
| Cisco | Cisco | Open Source Snort3 3.1.8.0 |
| Cisco | Cisco | Open Source Snort3 3.1.9.0 |
| Cisco | Cisco | Open Source Snort3 3.1.10.0 |
| Cisco | Cisco | Open Source Snort3 3.1.12.0 |
| Cisco | Cisco | Open Source Snort3 3.1.13.0 |
| Cisco | Cisco | Open Source Snort3 3.1.14.0 |
| Cisco | Cisco | Open Source Snort3 3.1.15.0 |
| Cisco | Cisco | Open Source Snort3 3.1.16.0 |
| Cisco | Cisco | Open Source Snort3 3.1.17.0 |
| Cisco | Cisco | Open Source Snort3 3.1.18.0 |
| Cisco | Cisco | Open Source Snort3 3.1.19.0 |
| Cisco | Cisco | Open Source Snort3 3.1.20.0 |
| Cisco | Cisco | Open Source Snort3 3.1.21.0 |
| Cisco | Cisco | Open Source Snort3 3.1.22.0 |
| Cisco | Cisco | Open Source Snort3 3.1.23.0 |
| Cisco | Cisco | Open Source Snort3 3.1.24.0 |
| Cisco | Cisco | Open Source Snort3 3.1.25.0 |
| Cisco | Cisco | Open Source Snort3 3.1.27.0 |
| Cisco | Cisco | Open Source Snort3 3.1.28.0 |
| Cisco | Cisco | Open Source Snort3 3.1.29.0 |
| Cisco | Cisco | Open Source Snort3 3.1.30.0 |
| Cisco | Cisco | Open Source Snort3 3.1.31.0 |
| Cisco | Cisco | Open Source Snort3 3.1.32.0 |
| Cisco | Cisco | Open Source Snort3 3.1.36.0 |
| Cisco | Cisco | Open Source Snort3 3.1.38.0 |
| Cisco | Cisco | Open Source Snort3 3.1.39.0 |
| Cisco | Cisco | Open Source Snort3 3.1.40.0 |
| Cisco | Cisco | Open Source Snort3 3.1.41.0 |
| Cisco | Cisco | Open Source Snort3 3.1.42.0 |
| Cisco | Cisco | Open Source Snort3 3.1.43.0 |
| Cisco | Cisco | Open Source Snort3 3.1.45.0 |
| Cisco | Cisco | Open Source Snort3 3.1.47.0 |
| Cisco | Cisco | Open Source Snort3 3.1.48.0 |
| Cisco | Cisco | Open Source Snort3 3.1.50.0 |
| Cisco | Cisco | Open Source Snort3 3.1.51.0 |
| Cisco | Cisco | Open Source Snort3 3.1.52.0 |
| Cisco | Cisco | Open Source Snort3 3.1.53.0 |
| Cisco | Cisco | Open Source Snort3 3.1.55.0 |
| Cisco | Cisco | Open Source Snort3 3.1.56.0 |
| Cisco | Cisco | Open Source Snort3 3.1.57.0 |
| Cisco | Cisco | Open Source Snort3 3.1.58.0 |
| Cisco | Cisco | Open Source Snort3 3.1.59.0 |
| Cisco | Cisco | Open Source Snort3 3.1.60.0 |
| Cisco | Cisco | Open Source Snort3 3.1.61.0 |
| Cisco | Cisco | Open Source Snort3 3.1.62.0 |
| Cisco | Cisco | Open Source Snort3 3.1.63.0 |
| Cisco | Cisco | Open Source Snort3 3.1.64.0 |
| Cisco | Cisco | Open Source Snort3 3.1.65.0 |
| Cisco | Cisco | Open Source Snort3 3.1.66.0 |
| Cisco | Cisco | Open Source Snort3 3.1.67.0 |
| Cisco | Cisco | Open Source Snort3 3.1.69.0 |
| Cisco | Cisco | Open Source Snort3 3.1.70.0 |
| Cisco | Cisco | Open Source Snort3 3.1.71.0 |
| Cisco | Cisco | Open Source Snort3 3.1.72.0 |
| Cisco | Cisco | Open Source Snort3 3.1.73.0 |
| Cisco | Cisco | Open Source Snort3 3.1.74.0 |
| Cisco | Cisco | Open Source Snort3 3.1.75.0 |
| Cisco | Cisco | Open Source Snort3 3.1.76.0 |
| Cisco | Cisco | Open Source Snort3 3.1.77.0 |
| Cisco | Cisco | Open Source Snort3 3.1.78.0 |
| Cisco | Cisco | Open Source Snort3 3.1.81.0 |
| Cisco | Cisco | Open Source Snort3 3.1.82.0 |
| Cisco | Cisco | Open Source Snort3 3.1.83.0 |
| Cisco | Cisco | Open Source Snort3 3.1.84.0 |
| Cisco | Cisco | Open Source Snort3 3.2.1.0 |
| Cisco | Cisco | Open Source Snort3 3.2.2.0 |
| Cisco | Cisco | Open Source Snort3 3.3.0.0 |
| Cisco | Cisco | Open Source Snort3 3.3.1.0 |
| Cisco | Cisco | Open Source Snort3 3.3.2.0 |
| Cisco | Cisco | Open Source Snort3 3.3.3.0 |
| Cisco | Cisco | Open Source Snort3 3.3.4.0 |
| Cisco | Cisco | Open Source Snort3 3.3.5.0 |
| Cisco | Cisco | Open Source Snort3 3.3.7.0 |
| Cisco | Cisco | Open Source Snort3 3.5.0.0 |
| Cisco | Cisco | Open Source Snort3 3.5.1.0 |
| Cisco | Cisco | Open Source Snort3 3.8.1.0 |
| Cisco | Cisco | Open Source Snort3 3.6.0.0 |
| Cisco | Cisco | Open Source Snort3 3.6.2.0 |
| Cisco | Cisco | Open Source Snort3 3.9.3.0 |
| Cisco | Cisco | Open Source Snort3 3.7.2.0 |
| Cisco | Cisco | Open Source Snort3 3.7.0.0 |
| Cisco | Cisco | Open Source Snort3 3.9.6.0 |
| Cisco | Cisco | Open Source Snort3 3.10.0.0 |
| Cisco | Cisco | Open Source Snort3 3.10.2.0 |
| Cisco | Cisco | Open Source Snort3 3.7.4.0 |
| Cisco | Cisco | Open Source Snort3 3.9.0.0 |
| Cisco | Cisco | Open Source Snort3 3.5.2.0 |
| Cisco | Cisco | Open Source Snort3 3.12.1.0 |
| Cisco | Cisco | Open Source Snort3 3.6.1.0 |
| Cisco | Cisco | Open Source Snort3 3.9.2.0 |
| Cisco | Cisco | Open Source Snort3 3.6.3.0 |
| Cisco | Cisco | Open Source Snort3 3.9.5.0 |
| Cisco | Cisco | Open Source Snort3 3.7.1.0 |
| Cisco | Cisco | Open Source Snort3 3.9.7.0 |
| Cisco | Cisco | Open Source Snort3 3.7.3.0 |
| Cisco | Cisco | Open Source Snort3 3.10.1.0 |
| Cisco | Cisco | Open Source Snort3 3.9.1.0 |
| Cisco | Cisco | Open Source Snort3 3.11.1.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
