Is CVE-2013-6963 being actively exploited?

CVE-2013-6963 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-6963?

CVE-2013-6963 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2013-6963

MEDIUM · CVSS 4.3EPSS 2.1%EU EUVD

Cross-site scripting (XSS) vulnerability in the registration component in Cisco WebEx Training Center allows remote attackers to inject arbitrary web script or HTML via a crafted URL, aka Bug ID CSCul36207.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE): CWE-79
EPSS score: 2.1% (82th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-6764)
Published: December 14, 2013
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-6764 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

cisco / webex training center

References

http://osvdb.org/100907
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6963(Vendor Advisory)
http://www.securityfocus.com/bid/64277
http://www.securitytracker.com/id/1029492(Third Party Advisory, VDB Entry)
https://exchange.xforce.ibmcloud.com/vulnerabilities/89695

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

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