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VulnerabilityKnown exploited
Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
CVE-2026-8452 · CISA KEV · August 26, 2026
Summary
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.
From CISA, quoted as published. Check the source before acting.
What to do
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 required action, quoted.
Affected products
| Vendor | Product |
|---|---|
| Citrix | NetScaler ADC and NetScaler Gateway |
Why it's on these mode pages
- Maritime: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Citrix (network and remote-access gear used in every mode, all modes) (matched by rule)
Change history
- November 9, 2026: First collected by Watch
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