Vulnerability Intelligence Report
HTTP Request Smuggling
CVE-2026-88773
Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1-37.279 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.
No Active Exploit Signals
CVSS Base Score
9.3
CRITICAL
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-444 ↗CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Citrix NetScaler | ADC | 0 < 14.1-73.37 (affected), 0 < 13.1-64.23 (affected), 0 < 14.1-73.37 FIPS (affected), 0 < 13.1-37.279 and NDcPP (affected) |
| Citrix NetScaler | Gateway | 0 < 14.1-73.37 FIPS (affected), 0 < 13.1-64.23 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | NetScaler · Vendor · USA |
| Reserved | 2026-09-10T07:14:57 |
| Published | 2026-09-27T16:20:08 |
| Patch Date | 2026-09-27 |
| Last Updated | 2026-09-27T16:20:08 |
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