CVE-2026-20058: medium-severity vulnerability in Cisco Secure Firewall Threat Defense (FTD)…
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application 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 vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.
These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart, causing a DoS condition.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Affected products
Cisco · Cisco Secure Firewall Threat Defense (FTD) SoftwareCisco · Cisco UTD SNORT IPS Engine SoftwareRelated CVEs — Cisco Secure Firewall Threat Defense (FTD)…
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%