CVE-2026-88771 PUBLISHED

A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

Assigner: NetScaler
Reserved: 10.09.2026 Published: 27.09.2026 Updated: 29.09.2026

Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.

This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to an unauthenticated attacker to execute arbitrary commands.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 9.5

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	Present	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Citrix NetScaler
Product	ADC
Versions	Default: unaffected affected from 0 to 14.1-73.37 (excl.) affected from 0 to 13.1-64.23 (excl.) affected from 0 to 14.1-73.37 FIPS (excl.) affected from 0 to 13.1.37.279 FIPS and NDcPP (excl.)

Vendor	Citrix NetScaler
Product	Gateway
Versions	Default: unaffected affected from 0 to 14.1-73.37 (excl.) affected from 0 to 13.1-64.23 (excl.)

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096

Problem Types

CWE-20 Improper input validation CWE