CVE-2026-8452Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service
Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.8 | HIGH | 4.0NetScaler (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:L |
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Aug 29, 2026
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.
Details
- CVE ID
- CVE-2026-8452
- Status
- Analyzed
- Assigner (CNA)
- NetScaler
- Published
- Jun 30, 2026
- Last modified
- 2026-08-27 04:18 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
NetScalerADC4 version ranges
- 14.1 before 72.61
- 13.1 before 63.18
- 14.1 FIPS before 72.61
- 13.1 FIPS and NDcPP before 37.272
NetScalerGateway2 version ranges
- 14.1 before 72.61
- 13.1 before 63.18