CVE-2026-13474
Denial of service via malformed HTTP/2 requests
At a glance Severity HIGH 8.7 EPSS EPSS 0.56 % · percentile 46 (2026-10-27) State PUBLISHED Published 2026-06-30 Updated 2026-06-30 Assigner NetScaler NVD status Analyzed Description 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
Scores Version Score Vector Scored by CVSS 4.0 HIGH 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L NetScaler CVSS 4.0 HIGH 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X NVD · 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 (Secondary) CVSS 3.1 HIGH 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD · nvd@nist.gov (Primary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* < 13.1-37.272cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* < 13.1-37.272cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 13.1 < 13.1-63.18cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 14.1 < 14.1-72.61cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:*cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 13.1 < 13.1-63.18cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 14.1 < 14.1-72.61Affected products Product Versions NetScaler · ADC affected 14.1 < 72.61 ; affected 13.1 < 63.18 ; affected 14.1 FIPS < 72.61 ; affected 13.1 FIPS and NDcPP < 37.272 NetScaler · Gateway affected 14.1 < 72.61 ; affected 13.1 < 63.18
References
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