Live › vulnerability › CVE-2020-3452
Go to dashboardCisco ASA and Firepower Threat Defense firewalls mishandle directory traversal sequences in HTTP request URLs. An unauthenticated remote attacker can read arbitrary files from the device's web services file system.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Apply the Cisco updates per vendor instructions (CISA required action); the specific fixed versions are not in the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
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