CVE-2026-88772

9.5 CRITICAL 77% exploit odds Drop everything exploited in the wild Fix listed Memory safety

What it is

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 Remote Code Execution or Denial of Service

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-09-10 07:14 UTC ReservedThe CVE id was reserved by its CNA
2026-09-27 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2026-09-27 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-28 12:26 UTC Last updatedMost recent change to the record
2026-09-30 Remediation deadlineCISA's due date for federal agencies to fix it

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 76.6% in the next 30 days (EPSS).
Severity: 9.5 CRITICAL (CVSS).
Fix: a patch or advisory is linked.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2026-09-27 17:16 UTC
Last modified: 2026-09-28 12:26 UTC
Added to CISA KEV: 2026-09-27
Exploit probability: 76.6% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Analyzed

Affected

Citrix Netscaler Application Delivery Controller < 13.1-64.23
Citrix Netscaler Application Delivery Controller < 13.1.37.279
Citrix Netscaler Application Delivery Controller < 14.1-73.37
Citrix Netscaler Application Delivery Controller ≤ 14.1-73.37
Citrix Netscaler Gateway < 13.1-64.23
Citrix Netscaler Gateway < 14.1-73.37

Attack profile CVSS 4.0 · 9.5

Attack vector: Network
Complexity: High
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-88772.md and follow it. Check whether this project is affected by CVE-2026-88772. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778

References

NVD record · CVE.org record