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Vulnerability record · CVE-2026-13474 · published 30 June 2026

CVE-2026-13474: Citrix netscaler application delivery controller memory leak vulnerability

Citrix · Netscaler Application Delivery Controller

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

8.7 CVSS 4.0 High EPSS 0.56% · top 55.9% CWE-401 · Memory leak
8.7CVSS 4.0 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References
2 Jul 2026Last modified by NVD

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

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:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-13474), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.