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CVE-2023-4966Unauthenticated sensitive information disclosure
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.
9.4 CRITICALEPSS 99.99%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.4 | CRITICAL | 3.1Citrix (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| 7.5 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
CISA required action
⚡ Known exploited · remediation due Nov 8, 2023
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.
Details
- CVE ID
- CVE-2023-4966
- Status
- Analyzed
- Assigner (CNA)
- Citrix
- Published
- Oct 10, 2023
- Last modified
- 2026-07-31 04:16 UTC
- Weaknesses
- CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Products
As published by the CNA in the CVE record.
CitrixNetScaler ADC6 version ranges
- 14.1 before 8.50
- 13.1 before 49.15
- 13.0 before 92.19
- 13.1-FIPS before 37.164
- 12.1-FIPS before 55.300
- 12.1-NDcPP before 55.300
CitrixNetScaler Gateway3 version ranges
- 14.1 before 8.50
- 13.1 before 49.15
- 13.0 before 92.19