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Not yet scored Actively exploited Used in ransomware

CVE-2025-5777

Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability

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.

Recommended 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.

CISA remediation due date for U.S. federal agencies: 11 Jul 2025.

Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.