CVE-2026-20068: medium-severity vulnerability in Cisco Cyber Vision
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.8epss 0.5%
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 error checking when parsing remote procedure call (RPC) data. An attacker could exploit this vulnerability by sending crafted RPC packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Affected products
Cisco · Cisco Cyber VisionCisco · Cisco Secure Firewall Threat Defense (FTD) SoftwareCisco · Cisco UTD SNORT IPS Engine SoftwareRelated CVEs — Cisco Cyber Vision
In the same product, most dangerous first.
CVE-2025-20362MEDIUMCVE-2025-20362EPSS 86.7%KEVCVE-2025-20333CRITICALCVE-2025-20333EPSS 72.0%KEVCVE-2026-20349HIGHCisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service VulnerabilityEPSS 1.0%KEVCVE-2026-76418HIGHCisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service VulnerabilityEPSS 0.8%KEVCVE-2021-1285HIGHMultiple Cisco Products SNORT Ethernet Frame Decoder Denial of Service VulnerabilityEPSS 2.9%CVE-2022-20685HIGHMultiple Cisco Products Snort Modbus Denial of Service VulnerabilityEPSS 1.5%