CVE-2020-3554
HIGHCisco ASA <9.12.4.3, >=9.13.0 <9.13.1.13 & FTD <6.2.2 - DoS via TCP Packet Processing
Title source: llmDescription
A vulnerability in the TCP packet processing of Cisco Adaptive Security Appliance (ASA) Software 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. The vulnerability is due to a memory exhaustion condition. An attacker could exploit this vulnerability by sending a high rate of crafted TCP traffic through an affected device. A successful exploit could allow the attacker to exhaust device resources, resulting in a DoS condition for traffic transiting the affected device.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-QFcNEPfx
Scores
CVSS v3
7.5
EPSS
0.0318
EPSS Percentile
87.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (4)
cisco/adaptive_security_appliance
< 9.12.4.3
cisco/adaptive_security_appliance_software
9.13.0 - 9.13.1.13
cisco/firepower_threat_defense
6.6.0
cisco/firepower_threat_defense
< 6.2.2
Published
Oct 21, 2020
Tracked Since
Feb 18, 2026