CVE-2026-3055 - Citrix NetScaler Out-of-Bounds Read Vulnerability

Project:Citrix

Product:NetScaler

Date Added:2026-03-30Due Date:2026-04-02Last Updated:March 31, 2026

Vulnerability Name

Citrix NetScaler Out-of-Bounds Read Vulnerability

Description

Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300&articleURL=NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_3055_and_CVE_2026_4368

https://nvd.nist.gov/vuln/detail/CVE-2026-3055