Is CVE-2013-6939 being actively exploited?

CVE-2013-6939 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-6939?

CVE-2013-6939 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2013-6939

MEDIUM · CVSS 5.0EPSS 1.5%EU EUVD

Unspecified vulnerability in Citrix NetScaler Application Delivery Controller (ADC) 9.3.x before 9.3-64.4, 10.0 before 10.0-77.5, and 10.1 before 10.1-118.7 allows attackers to cause a denial of service via unknown vectors, related to "RADIUS authentication."

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score: 1.5% (75th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-6740)
Published: March 11, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-6740 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

citrix / netscaler application delivery controller firmware
citrix / netscaler application delivery controller firmware
citrix / netscaler application delivery controller firmware
citrix / netscaler application delivery controller firmware

References

http://support.citrix.com/article/CTX139049(Vendor Advisory)

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

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