CVE Watch11 ago 2026

CVE-2020-3452

Cisco ASA and FTD Read-Only Path Traversal Vulnerability

CVSS

7.5

Alto

EPSS

100.0%

p100

KEV

SÍ

3 nov 2021

Exploit Today

0-100

Publicado: 22 jul 2020 · Última mod.: 11 ago 2026 · CWE-20 · CWE-22

EPSS · 30d

100.0%EPSS · 30 días100.0%

2026-09-162026-10-14

Ficha del catálogo KEV

Producto

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

Vulnerabilidad

Cisco ASA and FTD Read-Only Path Traversal Vulnerability

Añadido a KEV

3 nov 2021

Remediar antes de

3 may 2022

Uso conocido en ransomware

Descripción resumida

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.

Acción requerida

Apply updates per vendor instructions.

Notas

https://nvd.nist.gov/vuln/detail/CVE-2020-3452

Descripción técnica

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.

Referencias oficiales

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