CVE-2025-20244
Published: Aug 14, 2025
Modified: Aug 14, 2025
CVSS v3.1
7.7
Description
A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow a remote attacker that is authenticated as a VPN user to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header field value. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted Remote Access SSL VPN service on an affected device. A successful exploit could allow the attacker to cause a DoS condition, which would cause the affected device to reload.
| Vendor | Product | Versions |
|---|---|---|
Cisco | Cisco Adaptive Security Appliance (ASA) Software | affected 9.12.3affected 9.8.3affected 9.12.1affected 9.8.1affected 9.12.2+200 more versions |
Cisco | Cisco Firepower Threat Defense Software | affected 6.2.3.14affected 6.4.0.1affected 6.2.3.7affected 6.2.3affected 6.4.0.2+88 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:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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