How severe is CVE-2013-6011?

CVE-2013-6011 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2013-6011 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-2013-6011?

CVE-2013-6011 primarily affects Citrix Netscaler Application Delivery Controller Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6011?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-6011 published?

CVE-2013-6011 was published on 2013-10-04 and last updated on 2026-06-16.

CVE-2013-6011

CVE-2013-6011 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller Firmware with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Citrix Netscaler Application Delivery Controller Firmware
Published: 2013-10-04
Last modified: 2026-06-16

Description

Citrix NetScaler Application Delivery Controller (ADC) 10.0 before 10.0-76.7 allows remote attackers to cause a denial of service (nsconfigd crash and appliance reboot) via a crafted request.

Frequently asked questions

What is CVE-2013-6011?: Citrix NetScaler Application Delivery Controller (ADC) 10.0 before 10.0-76.7 allows remote attackers to cause a denial of service (nsconfigd crash and appliance reboot) via a crafted request.
How severe is CVE-2013-6011?: CVE-2013-6011 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2013-6011 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-2013-6011?: CVE-2013-6011 primarily affects Citrix Netscaler Application Delivery Controller Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6011?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-6011 published?: CVE-2013-6011 was published on 2013-10-04 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.0:*:*:*:*:*:*:*
cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:10.0.e:*:*:*:*:*:*:*
cpe:2.3:h:citrix:netscaler_application_delivery_controller:-:*:*:*:*:*:*:*

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