netVigilance Vulnerability intelligence since 2004
CVE-2026-3055 · netVigilance record NV26-0071

Citrix NetScaler Out-of-Bounds Read

past due

What to do

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

CISA deadline 2026-04-02 · passed 5 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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.

Who is affected

Citrix NetScaler. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-125.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 5 months ago

Sources