CVE-2019-12700: Cisco Firepower 9300 Firmware

Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days.

A vulnerability in the configuration of the Pluggable Authentication Module (PAM) used in Cisco Firepower Threat Defense (FTD) Software, Cisco Firepower Management Center (FMC) Software, and Cisco FXOS Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper resource management in the context of user session management. An attacker could exploit this vulnerability by connecting to an affected system and performing many simultaneous successful Secure Shell (SSH) logins. A successful exploit could allow the attacker to exhaust system resources and cause the device to reload, resulting in a DoS condition. To exploit this vulnerability, the attacker needs valid user credentials on the system.

Affected products

• Cisco Firepower 9300 Firmware: version r114 only; version r241 only
• Cisco Firepower Extensible Operating System: up to and including 2.2; from 2.3, before 2.3.1.155 (fixed in 2.3.1.155); from 2.4, before 2.6.1.131 (fixed in 2.6.1.131)
• Cisco Secure Firewall Management Center: up to and including 6.1.0; from 6.2.0, before 6.2.3.14 (fixed in 6.2.3.14); from 6.2.3, before 6.2.3.7 (fixed in 6.2.3.7)
• Cisco Secure Firewall Threat Defense: up to and including 6.1.0; from 6.2.0, before 6.2.3.14 (fixed in 6.2.3.14); from 6.2.0, before 6.2.2.5 (fixed in 6.2.2.5); from 6.2.3, before 6.2.3.7 (fixed in 6.2.3.7)

Published 2019-10-02. Last modified 2026-08-11.