CVE-2023-4966 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-4966HIGH

Citrix NetScaler ADC — Unauthenticated sensitive information disclosure

  AV  AC  PR  UI  S  C  I  A   CVSS     EPSS    %ile   KEV
   N   L   N   N  U  H  N  N    7.5   1.0000   100.0   YES

AFFECTED
  Product            Versions  Fixed
  NetScaler ADC      14.1 –    —
  NetScaler Gateway  14.1 –    —

TIMELINE
  Sep 14  Reserved by Citrix
  Oct 18  Added to CISA KEV, remediation due 2023-11-08
  Oct 18  Published (CNA: Citrix)
  Jul 31  RESCORED — CVE-2023-4966 (Citrix NetScaler ADC). CVSS 9.4 → 7.5 (NVD).

CWE-119 · CNA: Citrix · CVSS v3.1 · 3 references · NVD status: Analyzed · KEV due November 8, 2023

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 14, 2023	Reserved	Reserved by Citrix
October 18, 2023	KEV ADDED	Added to CISA KEV, remediation due 2023-11-08
October 18, 2023	Published	Published (CNA: Citrix)
July 31, 2026	RESCORED	RESCORED — CVE-2023-4966 (Citrix NetScaler ADC). CVSS 9.4 → 7.5 (NVD).

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Citrix	NetScaler ADC	—	14.1	—
Citrix	NetScaler Gateway	—	14.1	—

Weaknesses

CWE-119

References (3)

http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html [Third Party Advisory, VDB Entry]
https://support.citrix.com/article/CTX579459 [Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966 [US Government Resource]

Authoritative record: CVE-2023-4966 at cve.org

Vendors: citrix

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-4966 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.