Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since July 10, 2025.
CVE-2025-5777
Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
Citrix · NetScaler ADC and Gateway
Added to KEV July 10, 2025
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2025-5777
- CWE
- CWE-125
- Affected products
- NetScaler ADC and Gateway · Citrix NetScaler ADC and Gateway · Citrix
What happened
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.
What it means for your business
Citrix NetScaler ADC and Gateway is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2025-5777). 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. CISA remediation due date: 2025-07-11. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: July 11, 2025
Sources
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