CVE-2026-3055

Citrix NetScaler Out-of-Bounds Read Vulnerability

Citrix — NetScaler

Added to KEV catalog: 30 March 2026
Federal remediation due date: 2 April 2026
Weakness classification (CWE): CWE-125

CISA 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.

Required 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.

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

View on NVD View on MITRE CVE View full CISA catalog

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