PT-2026-53881 · Citrix · Netscaler Gateway+1

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-8655

Positive Technologies (AI Summary)

CVSS v4.0

8.8

High

Base vector

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

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

Description Multiple memory overflow issues can lead to unpredictable or erroneous behavior and Denial of Service. This occurs when NetScaler ADC is configured as an Oracle load balancer, a DNS Proxy, or a DNS recursive resolver deployment.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2026-8655

Affected Products

Netscaler Adc

Netscaler Gateway

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-8655 · 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