CVE-2026-20236 Cisco Snort 3 - Undefined Vulnerability

Cisco Snort 3 contains a vulnerability caused by incorrect calculation errors, letting attackers potentially cause unexpected behavior or denial of service, exploit requires crafted input.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Undefined Vulnerability
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-682

Vendor fix

Update to the latest Snort 3 version with security hardening 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

← All CVEs