CVE-2025-5777: NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread
High · CVSS 7.5 (CVSS 3.1)KEV known exploitedEPSS 100.0%, 100th percentilePublished Updated Assigner: Citrix
In CISA’s Known Exploited Vulnerabilities catalog: Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability.
Added , federal remediation due . 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
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · CWE-125
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
NetScaler: ADCNetScaler: Gateway
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- support.citrix.com/support-home/kbsearch/article (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)