What is CVE-2026-13474?

CVE-2026-13474 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2026-06-30.

How severe is CVE-2026-13474?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Citrix Netscaler Application Delivery Controller

CVE-2026-13474

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler

EPSS: 0.005 (38.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Citrix Netscaler_application_delivery_controller — versions 14.1-66.68
Citrix Netscaler_gateway
Netscaler Adc — versions 14.1, 13.1, 14.1 FIPS
Netscaler Gateway — versions 14.1, 13.1

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-13474?: CVE-2026-13474 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2026-06-30.
How severe is CVE-2026-13474?: High severity. CVSS v3 base score is 7.5 out of 10.