CVE-2025-5777
Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
CVSS
—
No CVSS
EPSS
99.9%
p100
KEV
YES
Jul 10, 2025
Exploit Today
80
0-100
Published: — · Last modified: —
Product
Citrix / NetScaler ADC and Gateway
Vulnerability
Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability
Added to KEV
Jul 10, 2025
Remediate by
Jul 11, 2025
Known ransomware use
Yes
Summary 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.
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.
Notes
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 ; https://nvd.nist.gov/vuln/detail/CVE-2025-5777