CVE Intel / CVE-2023-4966

CVE-2023-4966

netscaler application delivery controller · citrix
CISA KEVexploited on our sensorsCritical network detectable

What it is

Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA  virtual server.

Live exploitation on the huntback network (30 days)

4
attempts captured
4
distinct source IPs
2026-09-21
last seen
huntback carries a network signature for this CVE. Exploitation attempts are detected on the decoy fleet in real time.

How huntback helps

Deploy a decoy that emulates netscaler application delivery controller and you will see every attempt at this CVE the moment it lands, with the full payload, the attacker's infrastructure, and any stage-2 loader. Then huntback can scan the attacker back.

CVSSn/a Critical
EPSS1.00 (99% pct)
In CISA KEVyes
Publishedn/a
Network detectableyes, signatured