CVE-2025-5777 — Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
2025-07-10 • CISA Known Exploited Vulnerability
[event] Citrix NetScaler ADC and Gateway contain an out-of-bounds read vulnerability due to insufficient input validation. This vulnerability can lead to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Citrix |
| Product | NetScaler ADC and Gateway |
| CWE | CWE-125 |
| CVE ID | CVE-2025-5777 |
| Date Added | 2025-07-10 |
| Due Date | 2025-07-11 |
| Ransomware Campaign | Known — this vulnerability has been leveraged in ransomware campaigns |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2025-07-11