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CVE-2026-8452

Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Citrix NetScaler ADC and NetScaler Gateway

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

CVSS Score
8.8
High
EPSS — Exploit Probability
1.0%
Riskier than 62% of all CVEs · checked 2026-09-28
Exploitation
Confirmed in the wild
KEV since 2026-08-26
Remediation
Patch available
Federal deadline 2026-08-29
CISA 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. Deadline for federal agencies: 2026-08-29.

NVD entry Vendor patch PoC / advisory CISA KEV

10 articles across 6 outlets · first covered Jul 1, 2026 · latest Aug 28, 2026

Coverage timeline

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