Cisco ASA and FTD Read-Only Path Traversal Vulnerability
CISA lists this Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
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.
- Product
- Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
- Added to KEV
- 3 Nov 2021
- Federal remediation due
- 3 May 2022
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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