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CVE-2020-3452

CWE-20

High

90.0

RPS

Description

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.

Source: NVD

Signals

CVSS
7.5
High · v3.1
EPSS
99.99%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Nov 2021
Fix commit
No known fix commit
Sources: MoreFixes, FreshFixes
Weakness
CWE-20
CWE-20, CWE-22
Published
22 Jul 2020
Last modified 11 Aug 2026

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Data as of 7 Oct 2026, 05:16 UK time

CVE-2020-3452 · RPS 90.0 · DevSecure Intelligence