CVE-2025-5777
NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread
CVSS v3
7.5
HIGH
EPSS Score
66.7 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
active
SSVC status
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
CISA Known Exploited Vulnerability
- Date Added
- 2025-07-10
- Patch Due Date
- 2025-07-11
- Ransomware Use
- Known
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2025-06-17
- Last Modified
- 2025-10-30
- Exploit-DB
- EDB-52401
Frequently asked questions
What is CVE-2025-5777?
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
Is CVE-2025-5777 actively exploited?
Yes. CVE-2025-5777 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-07-11.
What is the CVSS score for CVE-2025-5777?
CVE-2025-5777 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string 3.1.
Is CVE-2025-5777 affecting your environment?
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