← Vulnerability feed

Vulnerability record · CVE-2026-88774 · published 27 September 2026

CVE-2026-88774: Citrix netscaler application delivery controller improper input validation vulnerability

Citrix · Netscaler Application Delivery Controller

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 a feature policy bypass due to improper HTTP URL based expression usage.

7.0 CVSS 4.0 High EPSS 0.40% · top 65.8% CWE-20 · Improper input validation
7.0CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References
29 Sep 2026Last modified by NVD

Description

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 a feature policy bypass due to improper HTTP URL based expression usage.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_C Vendor Advisory

Track CVE-2026-88774 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-3519Citrix NetScaler ADC and Gateway unauthenticated code injectionCitrix NetScaler ADC and NetScaler Gateway contain a code injection flaw (CWE-94) that allows unauthenticated remote code execution. The vendor bulle…KEVEPSS 100%analysed9.5CVE-2026-88771Citrix netscaler application delivery controller improper input validation vulnerabilityImproper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-…KEVEPSS 82%9.5CVE-2026-88772Citrix netscaler application delivery controller memory buffer overflow vulnerabilityVulnerability 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 F…KEVEPSS 77%9.3CVE-2026-19490Citrix NetScaler ADC and Gateway authentication bypass via alternate pathNetScaler ADC and NetScaler Gateway contain an authentication bypass via an alternate path or channel (CWE-288). The flaw is remotely reachable witho…KEVEPSS 33%analysed9.3CVE-2026-3055Citrix NetScaler ADC and Gateway SAML IDP memory overreadNetScaler ADC and NetScaler Gateway, when configured as a SAML identity provider, fail to validate input sufficiently, causing an out-of-bounds memor…KEVEPSS 91%analysed9.3CVE-2025-5777Citrix NetScaler ADC/Gateway memory overread via insufficient input validationCVE-2025-5777 is an insufficient input validation flaw in Citrix NetScaler ADC and NetScaler Gateway that causes a memory overread when the appliance…KEVEPSS 100%analysed9.2CVE-2025-7775Citrix NetScaler memory overflow allows remote code executionNetScaler ADC and NetScaler Gateway contain a memory buffer overflow (CWE-119) that can lead to remote code execution or denial of service. It affect…KEVEPSS 21%analysed9.2CVE-2025-6543Citrix NetScaler ADC and Gateway memory overflow allows control flow hijack and DoSNetScaler ADC and NetScaler Gateway contain a memory buffer overflow (CWE-119) that causes unintended control flow and denial of service. It affects …KEVEPSS 10%analysed

Source: NIST National Vulnerability Database (record CVE-2026-88774), CISA KEV, FIRST EPSS (scores of 2026-11-13). This page is refreshed as NVD updates the record.