Vulnerability · Published Mar 4, 2026 · Assigned by cisco
CVE-2026-20005
Medium 5.8
In plain English
A medium-severity security flaw in Cisco Cyber Vision from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.07.6.17.6.27.6.2.17.7.07.7.107.7.10.1 |
| Cisco | Cisco Cyber Vision | 3.0.43.0.03.0.13.0.23.0.33.0.53.0.63.1.0 |
| Cisco | Cisco UTD SNORT IPS Engine Software | 17.2.1r17.3.1a17.3.217.3.317.3.4a17.3.617.3.517.3.7 |
Weakness: CWE-392 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L