CVE-2026-20102Network attack vector

Browser data access via reflected SAML XSS

Published Mar 4, 2026 · Updated Mar 4, 2026

Reflected XSS in the SAML SSO feature of Cisco Secure Firewall ASA and FTD Software allows remote attackers to access browser-based data. The feature insufficiently validates multiple HTTP parameters before reflecting attacker-controlled content through an affected device. Exploitation requires configured SAML IdP and SP features plus remote-access VPN, and a user must open a malicious link.

CVSS severity6.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the SAML SSO feature of Cisco Secure Firewall ASA and FTD Software allows remote attackers to access browser-based data. The feature insufficiently validates multiple HTTP parameters before reflecting attacker-controlled content through an affected device. Exploitation requires configured SAML IdP and SP features plus remote-access VPN, and a user must open a malicious link.

The record

CVE
CVE-2026-20102
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
ClamAV
Product
Cisco Adaptive Security Appliance (ASA) Software
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.16.1
  2. Affected versionversion=9.16.1.28
  3. Affected versionversion=9.16.2
  4. Affected versionversion=9.16.2.11
  5. Affected versionversion=9.16.2.13
  6. Affected versionversion=9.16.2.14
  7. Affected versionversion=9.16.2.3
  8. Affected versionversion=9.16.2.7
  9. Affected versionversion=9.17.1
  10. Affected versionversion=9.17.1.10
  11. Affected versionversion=9.17.1.11
  12. Affected versionversion=9.17.1.13
  13. Affected versionversion=9.17.1.15
  14. Affected versionversion=9.17.1.20
  15. Affected versionversion=9.17.1.30
  16. Affected versionversion=9.17.1.33
  17. Affected versionversion=9.17.1.39
  18. Affected versionversion=9.17.1.45
  19. Affected versionversion=9.17.1.46
  20. Affected versionversion=9.17.1.7
  21. Affected versionversion=9.17.1.9
  22. Affected versionversion=9.18.4.66
  23. Affected versionversion=9.18.4.67
  24. Affected versionversion=9.20.4.10
  25. Affected versionversion=9.20.4.7
  26. Affected versionversion=9.22.2.13
  27. Affected versionversion=9.23.1.13
  28. Affected versionversion=9.23.1.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Adaptive Security Appliance (ASA) Softwareversion=9.16.1; version=9.16.1.28; version=9.16.2; version=9.16.2.11; version=9.16.2.13; version=9.16.2.14; version=9.16.2.3; version=9.16.2.7; version=9.17.1; version=9.17.1.10; version=9.17.1.11; version=9.17.1.13; version=9.17.1.15; version=9.17.1.20; version=9.17.1.30; version=9.17.1.33; version=9.17.1.39; version=9.17.1.45; version=9.17.1.46; version=9.17.1.7; version=9.17.1.9; version=9.18.4.66; version=9.18.4.67; version=9.20.4.10; version=9.20.4.7; version=9.22.2.13; version=9.23.1.13; version=9.23.1.19
ClamAV · Cisco Secure Firewall Threat Defenseversion=7.0.0; version=7.0.0.1; version=7.0.1; version=7.0.1.1; version=7.1.0; version=7.1.0.1; version=7.1.0.2; version=7.1.0.3

Published CVSS scores

6.1CiscoCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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