CVE-2022-20745
HIGHCisco ASA & FTD Unauthenticated DoS via HTTPS Request Parsing
Title source: llmDescription
A vulnerability in the web services interface for remote access VPN features 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. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a crafted HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asafdt-webvpn-dos-tzPSYern
Scores
CVSS v3
8.6
EPSS
0.0037
EPSS Percentile
59.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (3)
cisco/adaptive_security_appliance_software
< 9.12.4.38
cisco/firepower_threat_defense
7.1.0
cisco/firepower_threat_defense
< 6.4.0.15
Published
May 03, 2022
Tracked Since
Feb 18, 2026