PT-2026-53867 · Citrix · Netscaler Gateway+1

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-10817

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions NetScaler ADC (affected versions not specified) NetScaler Gateway (affected versions not specified)

Description Insufficient input validation leads to a memory overread when the TCP TimeStamp is enabled in the TCP Profile and is associated with a service or a virtual server of type LB, CS, or VPN. A memory overread occurs when a program reads data past the end of the intended buffer, potentially exposing sensitive information from the system memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary mitigation, disable the TCP TimeStamp in the TCP Profile associated with the virtual server or service.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-10817

Affected Products

Netscaler Adc

Netscaler Gateway

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-10817 · Security Note
• https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604&articleTitle=CTX696604_NetScaler_ADC_and_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_8451_CVE_2026_8452_CVE_2026_8655_CVE_2026_10816_CVE_2026_10817_and_CVE_2026_13474 · Reddit Post
• https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 · Note