CVE-2025-5777 — Citrix NetScaler ADC and Gateway Out-of-Bounds Read Vulnerability

CVE-2025-5777

HIGH · CVSS 7.5 ⚠ KEV — EXPLOITED

EPSS exploitation probability: 100%

⚠ Listed in the CISA Known Exploited Vulnerabilities catalog — actively exploited.

Published 2025-07-10 · Last modified 2026-08-04T05:16:35.613

Summary

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

Affected products

Citrix — NetScaler ADC and Gateway

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References

NVD entry
CVE.org record

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.