SB2026032374 - Remote code execution in Citrix Netscaler ADC and Citrix NetScaler Gateway
Published: March 23, 2026 Updated: May 20, 2026
Security Bulletin ID
SB2026032374
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-3055)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:A/U:Red
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary condition in SAML IDP. A remote attacker can send a specially crafted request the appliance, trigger an out-of-bounds read error and read contents of memory on the system.
Successful exploitation of the vulnerability may lead to full system compromise.
Remediation
Install update from vendor's website.