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Citrix Security BulletinsCTX697096

Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-88771, CVE-2026-88772, CVE-2026-88773, CVE-2026-88774, CVE-2026-88775, CVE-2026-88776, CVE-2026-88777, and CVE-2026-88778

CriticalVendor CVSS 9.5 / 10 8 CVEs Published Oct 12, 2026 at 5:26 AM UTC
Get alerts for NetScaler ADC and Citrix NetScaler Gateway

Summary

Citrix NetScaler ADC and Citrix NetScaler Gateway are affected by the vulnerabilities identified below

Products covered

  • Citrix NetScaler ADC and Citrix NetScaler Gateway

  • The following supported versions of Citrix NetScaler ADC and Citrix NetScaler Gateway are affected by the vulnerabilities: Citrix NetScaler ADC and Citrix NetScaler Gateway 14.1 BEFORE 14.1-73.37 Citrix NetScaler ADC and Citrix NetScaler Gateway 13.1 BEFORE 13.1-64.23 Citrix NetScaler ADC FIPS BEFORE 14.1-73.37 FIPS Citrix NetScaler ADC FIPS and NDcPP BEFORE 13.1-37.279

Remediation

Exploits of CVE-2026-88771 and CVE-2026-88772 on unmitigated NetScaler deployments have been observed.Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.

NetScaler deployments impacted by CVE-2026-88778 should apply the TCP configuration change as mentioned in https://docs.netscaler.com/en-us/citrix-adc/current-release/system/tcp-configurations.html#enhanced-isn-generation

Vendor-listed fixes

  • Citrix NetScaler ADC and Citrix NetScaler Gateway 14.1-73.37 and later releases

  • Citrix NetScaler ADC and Citrix NetScaler Gateway 13.1-64.23 and later releases of 13.1

  • Citrix NetScaler ADC 14.1-FIPS 14.1-73.37 FIPS and later releases of 14.1-FIPS

  • Citrix NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1.37.279 and later releases of 13.1-FIPS and 13.1-NDcPP

CVEs in this advisory 8

CVE-2026-88771CVE-2026-88772CVE-2026-88773CVE-2026-88774CVE-2026-88775CVE-2026-88776CVE-2026-88777CVE-2026-88778
Update history

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Updates

  1. Added to SecurityAlert

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  2. Published by Citrix

    The publication date reported by the vendor.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

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