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CVE Watch18 sept 2026

CVE-2026-20290

A vulnerability in SSL/TLS certificate parsing in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could

CVSS

5.8

Medio

EPSS

0.3%

p24

KEV

—

Exploit Today

7

0-100

Publicado: 16 sept 2026 · Última mod.: 18 sept 2026 · CWE-805

EPSS · 30d
0.2%EPSS · 30 días0.3%
2026-10-092026-11-06
Descripción técnica

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.

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