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CVE-2020-3452: Cisco ASA and FTD Read-Only Path Traversal Vulnerability
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) · in CISA KEV since 2021-11-03
2021-11-03added to KEV
2022-05-03federal remediation due date
99.99%EPSS exploit probability (30 days) 100.0th percentile
7.5 HIGHCVSS 3.1
Unknownknown ransomware use
469days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-20 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD published | 2020-07-22 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2020-3452.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.