CVE-2025-5777
CISA KEVPublished July 10, 2025 · Updated April 3, 2026
high
Official 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.
Affected Products
| Vendor | Product |
|---|---|
| Citrix | NetScaler ADC and Gateway |
Patch Status
Patch by 2025-07-11
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2025-5777.