Out-of-bounds read in Citrix Netscaler ADC and Citrix NetScaler Gateway - CVE-2026-10817
Published: June 30, 2026
Vulnerability identifier: #VU136000
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-10817
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in the TCP timestamp handling functionality when processing network traffic. A remote attacker can send crafted network traffic to disclose sensitive information.
TCP TimeStamp must be enabled in a TCP profile associated with a virtual server or configured service.
Affected software
Citrix Netscaler ADC
Citrix NetScaler Gateway
Citrix NetScaler Gateway
How to mitigate CVE-2026-10817
Install security update from vendor's website.
Citrix Netscaler ADC - addressed in versions 13.1-63.18, 14.1-72.61
Citrix NetScaler Gateway - addressed in versions 13.1-63.18, 14.1-72.61
Citrix NetScaler Gateway - addressed in versions 13.1-63.18, 14.1-72.61