Cisco Secure Firewall Threat Defense Software Snort 2 SSL/TLS Denial of Service Vulnerability
A vulnerability in SSL/TLS certificate parsing in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 2 Detection Engine to restart. This vulnerability is due to incomplete validation of the SSL certificate. An attacker could exploit this vulnerability by sending a crafted SSL connection setup request to be parsed by Snort 2. A successful exploit could allow the attacker to cause the Snort 2 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition. Cisco has rele
Read at Cisco PSIRT Security Advisories
- Vendor
- Cisco
- Product
- Firepower / FTD, Snort
- Exposure class
- Edge / VPN / firewall, Endpoint security
Why it ranks 26 (Notable)
- Exposed product class: edge / VPN / firewall
- Widely deployed vendor product (Cisco)
- Vendor security advisory
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- Cisco PSIRT Security Advisories (sec.cloudapps.cisco.com)
- CVE-2026-20290 on this site · NVD · CVE.org · Vulnpedia
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