CVE-2026-20005
Published: Mar 4, 2026
Modified: Mar 4, 2026
CVSS v3.1
5.8
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.
| Vendor | Product | Versions |
|---|---|---|
Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | affected 7.6.0affected 7.6.1affected 7.6.2affected 7.6.2.1affected 7.7.0+2 more versions |
Cisco | Cisco Cyber Vision | affected 3.0.4affected 3.0.0affected 3.0.1affected 3.0.2affected 3.0.3+47 more versions |
Cisco | Cisco UTD SNORT IPS Engine Software | affected 17.2.1raffected 17.3.1aaffected 17.3.2affected 17.3.3affected 17.3.4a+57 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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