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Vulnerability record · CVE-2026-88778 · published 27 September 2026

CVE-2026-88778: Citrix netscaler application delivery controller vulnerability

Citrix · Netscaler Application Delivery Controller

Predictable exact value from previous values 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.

8.8 CVSS 4.0 High EPSS 0.38% · top 70.5% CWE-342 · CWE-342
8.8CVSS 4.0 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References
29 Sep 2026Last modified by NVD

Description

Predictable exact value from previous values 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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L/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 Vendor Advisory

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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 1.1%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 1.3%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 23%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 4.0%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 20%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 11%analysed

Source: NIST National Vulnerability Database (record CVE-2026-88778), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.