CVE-2022-20745

HIGH

Cisco ASA & FTD Unauthenticated DoS via HTTPS Request Parsing

Title source: llm
STIX 2.1

Description

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

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