CVE-2025-20333
Published: Sep 25, 2025
Modified: Feb 26, 2026
CVSS v3.1
9.9
Description
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker with valid VPN user credentials could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as root, possibly resulting in the complete compromise of the affected device.
| Vendor | Product | Versions |
|---|---|---|
Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | affected 9.8.1affected 9.8.1.5affected 9.8.1.7affected 9.8.2affected 9.8.2.8+201 more versions |
Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | affected 6.2.3affected 6.2.3.1affected 6.2.3.2affected 6.2.3.3affected 6.2.3.4+89 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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