CVE-2022-20854
HIGHCisco Firepower Management Center 6.1.0-6.1.0.6 - Unauthenticated Denial of Service via SSH Connection Handling
Title source: llmDescription
A vulnerability in the processing of SSH connections of Cisco Firepower Management Center (FMC) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error handling when an SSH session fails to be established. An attacker could exploit this vulnerability by sending a high rate of crafted SSH connections to the instance. A successful exploit could allow the attacker to cause resource exhaustion, resulting in a reboot on the affected device.
References (1)
Core 1
Core References
Scores
CVSS v3
7.5
EPSS
0.0087
EPSS Percentile
53.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-755
CWE-400
Status
published
Products (36)
cisco/firepower_threat_defense
6.2.1
cisco/firepower_threat_defense
6.6.0
cisco/firepower_threat_defense
6.6.0.1
cisco/firepower_threat_defense
6.6.1
cisco/firepower_threat_defense
6.6.3
cisco/firepower_threat_defense
6.6.4
cisco/firepower_threat_defense
6.6.5
cisco/firepower_threat_defense
6.6.5.1
cisco/firepower_threat_defense
6.6.5.2
cisco/firepower_threat_defense
7.0.0
... and 26 more
Published
Nov 15, 2022
Tracked Since
Feb 18, 2026