4.3

CVE-2026-20069

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability

A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browser-based attacks against users of an affected device.

This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by persuading a user to visit a website that is designed to pass malicious HTTP requests to a device that is running Cisco Secure Firewall ASA Software or Cisco Secure FTD Software and has web services endpoints supporting VPN features enabled. A successful exploit could allow the attacker to reflect malicious input from the affected device to the browser that is in use and conduct browser-based attacks, including cross-site scripting (XSS) attacks. The attacker is not able to directly impact the affected device.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Firepower Threat Defense Software Version >= 6.4.0 < 7.0.9
Cisco ≫ Firepower Threat Defense Software Version >= 7.1.0 < 7.2.11
Cisco ≫ Firepower Threat Defense Software Version >= 7.3.0 < 7.4.3
Cisco ≫ Firepower Threat Defense Software Version >= 7.6.0 < 7.6.4
Cisco ≫ Firepower Threat Defense Software Version >= 7.7.0 < 7.7.11
Cisco ≫ Adaptive Security Appliance Software Version >= 9.12.1 < 9.16.4.85
Cisco ≫ Adaptive Security Appliance Software Version >= 9.17.1 < 9.18.4.66
Cisco ≫ Adaptive Security Appliance Software Version >= 9.19.1 < 9.20.4
Cisco ≫ Adaptive Security Appliance Software Version >= 9.22.1.1 < 9.22.2.4
Cisco ≫ Adaptive Security Appliance Software Version >= 9.23.1 < 9.23.1.7
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.189
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@cisco.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-desync-n5AVzEQw
Vendor Advisory