NetScaler ADC and Gateway
CVE-2026-88776: Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service
Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 4.0 8.8
EPSS0.38%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| ADC 0 | 14.1-73.37 or later |
| ADC 0 | 13.1-64.23 or later |
| ADC 0 | 14.1-73.37 FIPS or later |
| ADC 0 | 13.1.37.279 FIPS and NDcPP or later |
| Gateway 0 | 14.1-73.37 or later |
| Gateway 0 | 13.1-64.23 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Memory overflow vulnerability 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 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to unpredictable or erroneous behavior or Denial of Service
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.