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High 8.7Published Jun 30, 2026

CVE-2026-13474Denial of service via malformed HTTP/2 requests

Updated under an hour ago ()

Does this affect you?

It affects NetScaler ADC and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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
8.7 HIGH (v4.0, CNA)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
Weakness (CWE)
CWE-401
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
NetScaler
NVD analysis
Analyzed
Record last updated
Jun 30, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
NetScaler ADC
netscaler:adc (from the name)
from 14.1 before 72.61; from 13.1 before 63.18; from 14.1 FIPS before 72.61; from 13.1 FIPS and NDcPP before 37.272
CNA record
NetScaler Gateway
netscaler:gateway (from the name)
from 14.1 before 72.61; from 13.1 before 63.18
CNA record
citrix netscaler_application_delivery_controller
citrix:netscaler_application_delivery_controller
before 13.1-37.272; before 13.1-37.272; from 13.1 before 13.1-63.18; from 14.1 before 14.1-72.61; 14.1-66.68
NVD
citrix netscaler_gateway
citrix:netscaler_gateway
from 13.1 before 13.1-63.18; from 14.1 before 14.1-72.61
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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