--- title: "CVE-2020-3452: Cisco Adaptive Security Appliance Software… | CubePath" description: "A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software…" language: en source: https://cubepath.com/security/cve/CVE-2020-3452 --- # CVE-2020-3452: Cisco Adaptive Security Appliance Software… | CubePath ## 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. Official description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-3452) ## Key data ### CVSS 3.1 High 7.5 Score published by cisco in the CVE record. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | None | No effect on the trustworthiness of data. | | Availability impact | None | No effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.99992 (99.99% probability) Percentile 99.98% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Cisco ASA and FTD Read-Only Path Traversal Vulnerability Added to the catalog Nov 3, 2021 Federal due date May 3, 2022 ### CISA assessment as of Feb 4, 2025 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable yes Technical impact partial ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-20](https://cwe.mitre.org/data/definitions/20.html) Improper Input Validation ## Affected products Products listed in the CVE record, as the CNA published them. - Cisco Adaptive Security Appliance (ASA) Software - affected: unspecified up to before 9.6.4.42 - affected: unspecified up to before 9.8.4.20 - affected: unspecified up to before 9.9.2.74 - affected: unspecified up to before 9.10.1.42 - affected: unspecified up to before 9.13.1.10 - affected: unspecified up to before 9.14.1.10 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [20200722 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86) (tools.cisco.com) vendor-advisory - [packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-F…](http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html) - [packetstormsecurity.com/files/158647/Cisco-Adaptive-Securit…](http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html) - [packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42…](http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html) - [packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FT…](http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html) ## Timeline 1. ID reserved Dec 12, 2019 2. Record published Jul 22, 2020 3. Added to CISA KEV Nov 3, 2021 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)