CVE-2026-76524 Open Source Snort 3 - Command Injection

Open Source Snort 3 contains a command injection caused by lack of authentication in the control channel socket implementation, letting authenticated local attackers execute arbitrary commands as the Snort process user, exploit requires local access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution, File System Read, File System Write
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version of Snort 3 with control channel socket authentication fixes.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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