Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since October 18, 2023.
CVE-2023-4966
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
Citrix · NetScaler ADC and NetScaler Gateway
Added to KEV October 18, 2023
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2023-4966
- CWE
- CWE-119
- Affected products
- NetScaler ADC and NetScaler Gateway · Citrix NetScaler ADC and NetScaler Gateway · Citrix
What happened
Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
What it means for your business
Citrix NetScaler ADC and NetScaler Gateway is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2023-4966). Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. CISA remediation due date: 2023-11-08. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.
CISA due date: November 8, 2023
Sources
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