CVE-2025-5777
CRITICAL9.3Memory safetyCISA KEVRansomwareExploitNewsWas #1High EPSS
Description
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
Low
Integrity (Subsequent System)
Low
Availability (Subsequent System)
Low
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- Citrix / netscaler_application_delivery_controller12.1 – 12.1-55.328
- Citrix / netscaler_application_delivery_controller13.1 – 13.1-58.32
- Citrix / netscaler_application_delivery_controller13.1 – 13.1-37.235
- Citrix / NetScaler Gateway13.1 – 13.1-58.32
- NetScaler / ADC13.1 – 58.32
- NetScaler / ADC14.1 – 43.56
- NetScaler / Gateway13.1 – 58.32
- NetScaler / Gateway14.1 – 43.56
Exploits & proofs of concept
- exploit-dbCitrix NetScaler ADC/Gateway 14.1 - Memory Disclosureby Yesith Alvarez
- nucleiCitrix NetScaler Memory Disclosure - CitrixBleed 2by watchtowr,DhiyaneshDk,darses
News coverage
- Ransomware Groups Turn to Citrix Bleed 2, BYOVD, and Supply Chain CredentialsThe Hacker News · 7/2/2026
Updated 15m ago · 8 sources