Is CVE-2018-0406 being actively exploited?

CVE-2018-0406 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-0406?

CVE-2018-0406 has a CVSS 3.0 base score of 6.1 (MEDIUM).

CVE-2018-0406

MEDIUM · CVSS 6.1EPSS 1.8%EU EUVD

A vulnerability in the web-based management interface of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to conduct a reflected or Document Object Model based (DOM-based) cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCve84006.

Key facts

CVSS score: 6.1 (v3.0)
Severity: MEDIUM
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
EPSS score: 1.8% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-1229)
Published: August 1, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-1229 in the EU Vulnerability Database. Last updated in EUVD on November 26, 2024.

View on the EU Vulnerability Database

Affected products

cisco / web security appliance
cisco / web security appliance
cisco / web security appliance

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Cisco Web Security Appliance 10.5 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10799-2017 - archived

References

http://www.securityfocus.com/bid/104945(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1041406(Third Party Advisory, VDB Entry)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180801-wsa-xss(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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