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Citrix Security BulletinsCTX693420

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2025-5349 and CVE-2025-5777

CriticalVendor CVSS 9.3 / 10 2 CVEs Published Jul 20, 2026 at 9:56 AM UTC
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Summary

NetScaler ADC and NetScaler Gateway contain the vulnerabilities mentioned below:

Products covered

  • NetScaler ADC and NetScaler Gateway

  • The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-43.56 NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-58.32 NetScaler ADC 13.1-FIPS and NDcPP BEFORE 13.1-37.235-FIPS and NDcPP NetScaler ADC 12.1-FIPS BEFORE 12.1-55.328-FIPS Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and are vulnerable.

    Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.

Remediation

Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.

Additionally, we recommend running the following commands to terminate all active ICA and PCoIP sessions after all NetScaler appliances in the HA pair or cluster have been upgraded to the fixed builds.: kill icaconnection -all kill pcoipConnection -all Please ensure that the formatting remains intact as you copy and paste these commands. Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and no longer supported.

Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities. Cloud Software Group has published a related blog at https://www.netscaler.com/blog/news/evaluating-netscaler-logs-for-indicators-of-attempted-exploitation-of-cve-2025-5777/ which contains further context.

Vendor-listed fixes

  • NetScaler ADC and NetScaler Gateway 14.1-43.56 and later releases

  • NetScaler ADC and NetScaler Gateway 13.1-58.32 and later releases of 13.1

  • NetScaler ADC 13.1-FIPS and 13.1-NDcPP 13.1-37.235 and later releases of 13.1-FIPS and 13.1-NDcPP

  • NetScaler ADC 12.1-FIPS 12.1-55.328 and later releases of 12.1-FIPS

CVEs in this advisory 2

CVE-2025-5349CVE-2025-5777
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • Added affected products: The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-43.56 NetScaler ADC and NetScaler Gateway 13.1 BEFORE....
    • Removed affected products: The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities: NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-43.56 NetScaler ADC and NetScaler Gateway 13.1 BEFORE....
    • The vendor changed its remediation guidance.

Updates

  1. Published by Citrix

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

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