Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2025-5777

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

Published

2025-06-17T13:15:21.523

Last Modified

2025-10-30T20:10:26.470

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Secondary
CWE-125
Type: Primary
CWE-908
Type: Secondary
CWE-457

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	citrix	netscaler_application_delivery_controller	< 12.1-55.328	Yes
Application	citrix	netscaler_application_delivery_controller	< 13.1-37.235	Yes
Application	citrix	netscaler_application_delivery_controller	< 13.1-37.235	Yes
Application	citrix	netscaler_application_delivery_controller	< 13.1-58.32	Yes
Application	citrix	netscaler_application_delivery_controller	< 14.1-43.56	Yes
Application	citrix	netscaler_gateway	< 13.1-58.32	Yes
Application	citrix	netscaler_gateway	< 14.1-43.56	Yes

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 Vendor Advisory ([email protected])
https://citrixbleed.com Broken Link, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/ Press/Media Coverage, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/ Press/Media Coverage (af854a3a-2127-422b-91ae-364da2661108)
https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 Third Party Advisory (134c704f-9b21-4f2e-91b3-4a467353bcc0)
https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/ Third Party Advisory (134c704f-9b21-4f2e-91b3-4a467353bcc0)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5777 US Government Resource (134c704f-9b21-4f2e-91b3-4a467353bcc0)