CVE-2026-13474

Name: CVE-2026-13474
Creator: NVD / NIST
Published: 2026-06-30T13:17:09.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.40%

Last modified Jul 2, 2026

CVE-2026-13474 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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 estimates a 0.40% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

8.7/10

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

EPSS Probability

0.40%

32.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-401

Affected Software

Vendor	Product	Versions
Citrix	Netscaler Application Delivery Controller	< 13.1-37.272
Citrix	Netscaler Application Delivery Controller	>= 13.1, < 13.1-63.18
Citrix	Netscaler Application Delivery Controller	>= 14.1, < 14.1-72.61
Citrix	Netscaler Application Delivery Controller	14.1-66.68
Citrix	Netscaler Gateway	>= 13.1, < 13.1-63.18
Citrix	Netscaler Gateway	>= 14.1, < 14.1-72.61

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604Vendor Advisory

Timeline

Published: Jun 30, 2026
Last Modified: Jul 2, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-13474?

How severe is CVE-2026-13474?

CVE-2026-13474 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-13474?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST