CVE-2026-3055
Citrix NetScaler Out-of-Bounds Read Vulnerability
Summary
Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.
Affected software
Vendor: Citrix · Product: NetScaler
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Citrix
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2023-4966 | Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability | 100.0% | Yes |
| CVE-2019-19781 | Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability | 100.0% | Yes |
| CVE-2025-5777 | Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability | 99.9% | Yes |
| CVE-2023-3519 | Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability | 99.7% | Yes |
| CVE-2023-24489 | Citrix Content Collaboration ShareFile Improper Access Control Vulnerability | 94.4% | Yes |
| CVE-2019-12989 | Citrix SD-WAN and NetScaler SQL Injection Vulnerability | 94.1% | Yes |
| CVE-2020-8193 | Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass Vulnerabili | 88.4% | Yes |
| CVE-2019-12991 | Citrix SD-WAN and NetScaler Command Injection Vulnerability | 74.1% | Yes |
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