CVE-2026-13474: high-severity vulnerability in NetScaler ADC
Denial of service via malformed HTTP/2 requests
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.6%
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
Related CVEs — NetScaler ADC
In the same product, most dangerous first.
CVE-2025-5777CRITICALNetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overreadEPSS 100.0%KEVCVE-2026-3055CRITICALInsufficient input validation leading to memory overreadEPSS 91.5%KEVCVE-2026-19490CRITICALNetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19490EPSS 32.7%KEVCVE-2025-7775CRITICALMemory overflow vulnerability leading to Remote Code Execution and/or Denial of ServiceEPSS 20.7%KEVCVE-2026-88779HIGHMemory overflow vulnerability leading to Denial of ServiceEPSS 11.4%KEVCVE-2025-6543CRITICALMemory overflow vulnerability leading to unintended control flow and Denial of ServiceEPSS 10.4%KEV