How severe is CVE-2013-6939?

CVE-2013-6939 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-6939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6939?

CVE-2013-6939 primarily affects Citrix Netscaler Application Delivery Controller Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-6939 published?

CVE-2013-6939 was published on 2014-03-11 and last updated on 2026-06-17.

CVE-2013-6939

CVE-2013-6939 is a medium-severity vulnerability in Citrix Netscaler Application Delivery Controller Firmware with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Citrix Netscaler Application Delivery Controller Firmware
Published: 2014-03-11
Last modified: 2026-06-17

Description

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."

Frequently asked questions

What is CVE-2013-6939?: 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."
How severe is CVE-2013-6939?: CVE-2013-6939 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-6939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6939?: CVE-2013-6939 primarily affects Citrix Netscaler Application Delivery Controller Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6939 published?: CVE-2013-6939 was published on 2014-03-11 and last updated on 2026-06-17.

References

http://support.citrix.com/article/CTX139049

Affected products (4)

cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:9.3\(1\):*:*:*:*:*:*:*
cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:9.3.e:*:*:*:*:*:*:*
cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.0:*:*:*:*:*:*:*
cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.1:*:*:*:*:*:*:*

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