Skip to content
CVE PROGRAM SOURCE RECORD5.8 Medium

CVE-2026-20006

Cisco Firepower Threat Defense Software and Cisco FirePOWER Services TLS with Snort 3 Denial of Service Vulnerability

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
cisco

Description

A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper implementation of the TLS protocol. An attacker could exploit this vulnerability by sending a crafted TLS packet to an affected system. A successful exploit could allow the attacker to cause a device that is running Cisco Secure FTD Software to drop network traffic, resulting in a DoS condition.  Note: TLS 1.3 is not affected by this vulnerability.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco Secure Firewall Threat Defense (FTD) Software

Default version status: unknown

  • 7.2.0affected
  • 7.2.0.1affected
  • 7.2.1affected
  • 7.3.0affected
  • 7.2.2affected
  • 7.2.3affected
  • 7.3.1affected
  • 7.2.4affected
  • 7.2.5affected
  • 7.2.4.1affected
  • 7.3.1.1affected
  • 7.4.0affected
  • 7.2.5.1affected
  • 7.4.1affected
  • 7.2.6affected
  • 7.4.1.1affected
  • 7.2.7affected
  • 7.2.5.2affected
  • 7.3.1.2affected
  • 7.2.8affected
  • 7.6.0affected
  • 7.4.2affected
  • 7.2.8.1affected
  • 7.4.2.1affected
  • 7.2.9affected
  • 7.4.2.2affected
  • 7.2.10affected
  • 7.6.1affected
  • 7.4.2.3affected
  • 7.6.2affected
  • 7.6.2.1affected
  • 7.4.2.4affected
  • 7.2.10.2affected

References