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High · 7.5 Known exploited Scanner template Public exploit CVE-2020-3452 EUVD-2020-24723GHSA-q26c-r46f-6fcq

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability

Published Jul 22, 2020 · Updated Oct 21, 2025 · Assigned by cisco

Vendor: Cisco Product: Cisco Adaptive Security Appliance (ASA) Software Category: Network devices

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.

Affected products

VendorProductAffectedFixed
Cisco Cisco Adaptive Security Appliance (ASA) Software unspecified – < 9.6.4.42, unspecified – < 9.8.4.20, unspecified – < 9.9.2.74, unspecified – < 9.10.1.42, unspecified – < 9.13.1.10, unspecified – < 9.14.1.10 9.6.4.42

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 3

GitHub 23 repositories · most starred shown

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References