CVE-2023-4966
Expert Analysis
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CVSS Score
V3.1EPSS Score
v2025.03.14There is a 94.4% chance that this vulnerability will be exploited in the wild within the next 30 days.
Attack Vector Metrics
Impact Metrics
Description
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.
Available Exploits
Citrix Bleed - Leaking Session Tokens
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.
References:
- https://github.com/assetnote/exploits/blob/main/citrix/CVE-2023-4966/exploit.py
- https://github.com/Chocapikk/CVE-2023-4966
- https://www.assetnote.io/resources/research/citrix-bleed-leaking-session-tokens-with-cve-2023-4966
- https://x.com/assetnote/status/1716757539323564196?s=20
- https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/
Related News
Affected Products
Known Exploited Vulnerability
This vulnerability is actively being exploited in the wild
Remediation Status
Due Date
Added to KEV
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.
Affected Product
Ransomware Risk
Social Media Intelligence
Real-time discussions and threat intelligence from social platforms
🔥 Most Brutal VPN Exploits Exposed — A Technical Breakdown By CyberDudeBivash – Ruthless, Engineering-Grade Threat Intel https://preview.redd.it/kmgikig5tsjf1.png?width=1536&format=png&auto=webp&s=8a0dc329b5e31ebb657f9e2b65d1e37721ff9ab6 # 1. Introduction Virtual Private Networks (VPNs) are the **backbone of remote access security**, yet they remain **prime targets** for advanced persistent threats (APTs) and ransomware groups. Over the last decade, **VPN …