CVE-2026-20069

MEDIUM EPSS 19.1%
Published Mar 4, 20263mo ago · Modified Jun 2, 20263w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Mar 4, 2026 3mo ago
Last Modified Jun 2, 2026 3w ago

Description

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.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
19.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-444

Affected Products 10

VendorProductVersionRange
ciscofirepower_threat_defense_software*≥6.4.0  –  <7.0.9
ciscofirepower_threat_defense_software*≥7.1.0  –  <7.2.11
ciscofirepower_threat_defense_software*≥7.3.0  –  <7.4.3
ciscofirepower_threat_defense_software*≥7.6.0  –  <7.6.4
ciscofirepower_threat_defense_software*≥7.7.0  –  <7.7.11
ciscoadaptive_security_appliance_software*≥9.12.1  –  <9.16.4.85
ciscoadaptive_security_appliance_software*≥9.17.1  –  <9.18.4.66
ciscoadaptive_security_appliance_software*≥9.19.1  –  <9.20.4
ciscoadaptive_security_appliance_software*≥9.22.1.1  –  <9.22.2.4
ciscoadaptive_security_appliance_software*≥9.23.1  –  <9.23.1.7

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.