CVE-2026-20102
Cisco Adaptive Security Appliance (ASA) vulnerability analysis and mitigation

A vulnerability in the SAML 2.0 single sign-on (SSO) feature of Cisco Secure Firewall ASA Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the SAML feature and access sensitive, browser-based information.

This vulnerability is due to insufficient input validation of multiple HTTP parameters. An attacker could exploit this vulnerability by persuading a user to access a malicious link. A successful exploit could allow the attacker to conduct a reflected XSS attack through an affected device.


SourceNVD

Related Cisco Adaptive Security Appliance (ASA) vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-20103HIGH8.6
  • Cisco Adaptive Security Appliance (ASA)Cisco Adaptive Security Appliance (ASA)
  • cpe:2.3:o:cisco:adaptive_security_appliance_software
NoYesMar 04, 2026
CVE-2026-20105HIGH7.7
  • Cisco Adaptive Security Appliance (ASA)Cisco Adaptive Security Appliance (ASA)
  • cpe:2.3:o:cisco:adaptive_security_appliance_software
NoYesMar 04, 2026
CVE-2026-20102MEDIUM6.1
  • Cisco Adaptive Security Appliance (ASA)Cisco Adaptive Security Appliance (ASA)
  • cpe:2.3:o:cisco:adaptive_security_appliance_software
NoYesMar 04, 2026
CVE-2026-20106MEDIUM5.3
  • Cisco Adaptive Security Appliance (ASA)Cisco Adaptive Security Appliance (ASA)
  • cpe:2.3:o:cisco:adaptive_security_appliance_software
NoYesMar 04, 2026
CVE-2026-20021MEDIUM4.3
  • Cisco Adaptive Security Appliance (ASA)Cisco Adaptive Security Appliance (ASA)
  • cpe:2.3:o:cisco:adaptive_security_appliance_software
NoYesMar 04, 2026

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