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

Gedeon Richemond

< 1 min read

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

Description of Problem

A vulnerability has been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).

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Affected Versions

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
Summary
CVD-ID Description Pre-conditions CWE CVSSv4
CVE-2025-5349 Improper access control on the NetScaler Management Interface Access to NSIP, Cluster Management IP or local GSLB Site IP CWE-284: Improper Access Control CVSS v4.0 Base Score: 8.7 (CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L)
CVE-2025-5777 Insufficient input validation leading to memory overread NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server CWE-125: Out-of-bounds Read CVSS v4.0 Base Score: 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L)
 
What Customers Should Do

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

  • 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

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

More Information

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420&articleTitle=NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2025_5349_and_CVE_2025_5777

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For assistance from the Kraft Kennedy team, please contact us.