CVE-2026-13474

HIGH

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 v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 6/30/2026Modified: 7/2/2026

Related Intelligence (2)

CRITICALVulnerability

New CitrixBleed-like NetScaler flaw sees exploit attempts in the wild

Citrix NetScaler appliances have been a constant target for attackers in recent years, most recently through an information leak vulnerability dubbed CitrixBleed 3, the latest in a series of NetScaler memory overreads going back to 2023. This week, Citrix patched yet another CitrixBleed-like vulnerability and there are signs of in-the-wild exploitation already. The new memory overread vulnerabilit

CVE-2026-8451CVE-2023-4966
CSO Online
HIGHVulnerability

NVD HIGH: CVE-2026-13474 — Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler G...

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

CVE-2026-13474
NIST NVD

References (1)

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