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· New victim: cipher.systems — m3rx· New victim: International Chemical Co. — Barracuda· New victim: M****n — payoutsking· New victim: Applied Composites — Storm· New victim: Magna Legal Services — Storm· New KEV: CVE-2026-65660 · Microsoft· New KEV: CVE-2026-87902 · WordPress· New KEV: CVE-2026-67279 · MikroTik· New KEV: CVE-2026-71362 · Adobe· New KEV: CVE-2026-5430 · WSO2· New victim: 6,898 new IOCs ingested in last 24h cipher.systems — m3rx· New victim: International Chemical Co. — Barracuda· New victim: M****n — payoutsking· New victim: Applied Composites — Storm· New victim: Magna Legal Services — Storm· New KEV: CVE-2026-65660 · Microsoft· New KEV: CVE-2026-87902 · WordPress· New KEV: CVE-2026-67279 · MikroTik· New KEV: CVE-2026-71362 · Adobe· New KEV: CVE-2026-5430 · WSO2· 6,898 new IOCs ingested in last 24h

← Vulnerabilities

CVE-2023-4966

⚡ CISA KEV🔐 Ransomware

Published: 2023-10-10Modified: 2026-07-31Vendor: CitrixProduct: NetScaler ADC and NetScaler Gateway

9.4

CVSS v3

100.0%

EPSS

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

⚡ Added to KEV on 2023-10-18 · Federal agencies must remediate by 2023-11-08

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.

💣 Public Exploits0

From Exploit-DB

No public exploits in Exploit-DB.

🔍 Sigma Detection Rules4

Rules tagged with this CVE

high	CVE-2023-4966 Exploitation Attempt - Citrix ADC Sensitive Information Disclosure - Proxy	—	—
high	CVE-2023-4966 Exploitation Attempt - Citrix ADC Sensitive Information Disclosure - Webserver	—	—
medium	CVE-2023-4966 Potential Exploitation Attempt - Citrix ADC Sensitive Information Disclosure - Proxy	—	—
medium	CVE-2023-4966 Potential Exploitation Attempt - Citrix ADC Sensitive Information Disclosure - Webserver	—	—

🛠️ Patch Details1

Affected/fixed versions from threat intel reports

Citrix NetScaler

📰 Threat Intel Coverage3

Digest reports mentioning this CVE

CitrixBleed 2 (CVE-2025-5777) 7Steps to Dragonforce Ransomware \| Huntress	huntress	2026-07-09
Ransomware Tactics, Techniques, and Procedures in a Shifting Threat Landscape \| Google Cloud Blog	mandiant	2026-03-16
“Citrix Bleed 2” – Critical Info Disclosure Vulnerability Exploited in NetScaler Gateway and ADC (CVE-2025-5777)	hawkeye	2025-07-22

📎 References5

↗ http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html ↗ https://support.citrix.com/article/CTX579459 ↗ http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html ↗ https://support.citrix.com/article/CTX579459 ↗ https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966

View on NVD ↗

Recent Victims3 today

cipher.systems

United States

m3rx

International Chemical Co.

Barracuda

M****n

United States

payoutsking

Applied Composites

United States

Storm

Magna Legal Services

United States

Storm

Ligue se Grupo

Portugal

thegentlemen

Charles Keith

Singapore

thegentlemen

ENKEI*******

thegentlemen

FTAPI Software

United States

thegentlemen

Crossett

United States

termite

N...

SilentRansomGroup

S...

SilentRansomGroup

GE Vernova Inc.

United States

metaencryptor

PKF Hadiwinata

ID

metaencryptor

Platinum Healthcare Staffing

United States

metaencryptor

Electrolux & Ontrac

emperador

Securitas Group

Sweden

everest

Morula IVF

South Africa

everest

Tobin & Company

United States

Wallstreet

Ar Valve Resources

United Kingdom

Wallstreet

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