CVE-2025-5777 — Actively Exploited: NetScaler ADC and Gateway (Citrix)
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.
| CVE ID | CVE-2025-5777 |
|---|---|
| Vendor | Citrix |
| Product | NetScaler ADC and Gateway |
| Vulnerability name | Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability |
| Date added | 2025-07-10 |
| Remediation due | 2025-07-11 |
| Known ransomware use | Known |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
| Description | 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. |
| Source | CISA Known Exploited Vulnerabilities |
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