Vulnerability in Citrix Netscaler Application Delivery Controller
CVE-2026-13474
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Citrix Netscaler Application Delivery Controller — versions 14.1-66.68
- Citrix Netscaler Gateway
- Netscaler Adc — versions 14.1, 13.1, 14.1 FIPS
- Netscaler Gateway — versions 14.1, 13.1
Weakness classification (CWE)
References
- 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-13474?
- CVE-2026-13474 is a high-severity vulnerability in Citrix Netscaler Application Delivery Controller, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2026-06-30.
- How severe is CVE-2026-13474?
- High severity. CVSS v3 base score is 7.5 out of 10.