CVE-2025-5777
NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread
Basic Information
- CVE State
- PUBLISHED
- Reserved Date
- June 06, 2025
- Published Date
- June 17, 2025
- Last Updated
- February 26, 2026
- Vendor
- NetScaler
- Product
- ADC, Gateway
- 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
- Tags
- Exploitation
- active
- Automatable
- Yes
- Technical Impact
- total
- Exploited in the Wild
- Yes (2026-06-01 10:36:46 UTC) Source
cisa
nuclei_scanner
CVSS Scores
CVSS v4.0
9.3 - CRITICAL
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
SSVC Information
Exploit Status
Known Exploited Vulnerability Information
| Source | Added Date |
|---|---|
| CVE | 2026-06-01 10:36:46 UTC |
Scanner Integrations
| Scanner | URL | Date Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-5777.yaml | 2026-06-01 15:34:43 UTC |
Timeline
-
CVE ID Reserved
-
CVE Published to Public
-
Added to KEVIntel
-
Detected by Nuclei