PT-2026-53868 · Citrix · Netscaler Gateway+1

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-13474

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Name of the Vulnerable Software and Affected Versions NetScaler ADC (affected versions not specified) NetScaler Gateway (affected versions not specified)

Description A denial of service issue exists when HTTP/2 is enabled in the HTTP Profile and associated with a virtual server of type LB, CS, or VPN, or the configured service. The issue is triggered by malformed HTTP/2 requests.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-13474

Affected Products

Netscaler Adc

Netscaler Gateway

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-13474 · Security Note
• https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604&articleTitle=CTX696604_NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_8451_CVE_2026_8452_CVE_2026_8655_CVE_2026_10816_CVE_2026_10817_and_CVE_2026_13474 · Reddit Post
• https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 · Note