CVE-2023-4966 (GCVE-0-2023-4966)
Vulnerability from cvelistv5
Published
2023-10-10 13:12
Modified
2025-10-21 23:05
Severity ?
9.4 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Summary
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
Impacted products
Vendor Product Version
Citrix NetScaler ADC Version: 14.1
Version: 13.1
Version: 13.0
Version: 13.1-FIPS
Version: 12.1-FIPS
Version: 12.1-NDcPP
 Create a notification for this product.
   Citrix NetScaler Gateway Version: 14.1
Version: 13.1
Version: 13.0
 Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2023-10-18

Due date: 2023-11-08

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.

Used in ransomware: Known

Notes: https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/, https://support.citrix.com/article/CTX579459/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20234966-and-cve20234967 ; https://nvd.nist.gov/vuln/detail/CVE-2023-4966

Show details on NVD website

To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.