CVE-2026-8452
Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-08-26. Federal due date: 2026-08-29.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Impact
Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| NetScaler | ADC | from 14.1 before 72.61 from 13.1 before 63.18 Versions 13.1 FIPS and NDcPP <37.272, 14.1 FIPS <72.61 |
| NetScaler | Gateway | from 14.1 before 72.61 from 13.1 before 63.18 |
| Citrix | Netscaler Application Delivery Controller | before 13.1-37.272 from 13.1 before 13.1-63.18 from 14.1 before 14.1-72.61 Version 14.1-66.68 |
| Citrix | Netscaler Gateway | from 13.1 before 13.1-63.18 from 14.1 before 14.1-72.61 |