CVE-2023-4966

HighCVSS 7.5/10Known exploited (CISA KEV)Last modified Jul 31, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-119

Affected software

Vendor	Product	Versions
Citrix	NetScaler ADC	>= 14.1, < 8.50; >= 13.1, < 49.15; >= 13.0, < 92.19; >= 13.1-FIPS, < 37.164; >= 12.1-FIPS, < 55.300; >= 12.1-NDcPP, < 55.300
Citrix	NetScaler Gateway	>= 14.1, < 8.50; >= 13.1, < 49.15; >= 13.0, < 92.19

References

http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
https://support.citrix.com/article/CTX579459Vendor Advisory
http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.htmlThird Party Advisory, VDB Entry
https://support.citrix.com/article/CTX579459Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966US Government Resource

Timeline

Published: Oct 10, 2023
Last modified: Jul 31, 2026
Added to CISA KEV: Oct 18, 2023
NVD status: Analyzed

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