Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since August 26, 2026.
CVE-2026-8452
NetScaler ADC and NetScaler Gateway vulnerability
Added to KEV August 26, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-8452
- CWE
- CWE-119
- Affected products
- NetScaler ADC and NetScaler Gateway · Citrix NetScaler ADC and NetScaler Gateway · Citrix
What happened
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.
What it means for your business
Citrix NetScaler ADC and NetScaler Gateway is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-8452). 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. CISA remediation due date: 2026-08-29. If you need help checking exposure, call (864) 335-9223.
Required action
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.
CISA due date: August 29, 2026
Sources
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