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

CVE ID

CVE-2026-3055

Vulnerability Name

Citrix NetScaler Out-of-Bounds Read Vulnerability

• Project: Citrix
• Product: NetScaler

Date

• Date Added: 2026-03-30
• Due Date: 2026-04-02

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

More CVEs Info

Common Vulnerabilities & Exposures (CVE) List