CVE-2023-6549 — 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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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
Need help remediating this vulnerability?
Our team helps organizations patch, mitigate, and respond to CISA KEV advisories fast.