CVE Watch11 ago 2026

CVE-2024-20353

Cisco ASA and FTD Denial of Service Vulnerability

CVSS

8.6

Alto

EPSS

70.7%

p99

KEV

SÍ

24 abr 2024

Exploit Today

0-100

Publicado: 24 abr 2024 · Última mod.: 11 ago 2026 · CWE-835

EPSS · 30d

70.7%EPSS · 30 días70.7%

2026-08-022026-08-31

Ficha del catálogo KEV

Producto

Cisco / Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

Vulnerabilidad

Cisco ASA and FTD Denial of Service Vulnerability

Añadido a KEV

24 abr 2024

Remediar antes de

1 may 2024

Uso conocido en ransomware

Descripción resumida

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition.

Acción requerida

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notas

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-websrvs-dos-X8gNucD2; https://nvd.nist.gov/vuln/detail/CVE-2024-20353

Descripción técnica

A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.

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