CVE-2023-6549β€”Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

PUBLISHEDvulnerability record
2024-01-17 Β· last modified June 21, 2025

Metadata

CVE ID:
CVE-2023-6549
Project:
Citrix
Product:
NetScaler ADC and NetScaler Gateway
Date Added:
2024-01-17
Due Date:
2024-02-07
Last Updated:
June 21, 2025

Vulnerability Name

Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Description

Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for a denial-of-service when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Additional Notes

  • https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549
  • https://nvd.nist.gov/vuln/detail/CVE-2023-6549

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