CVE-2025-5777

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://citrixbleed.com Third Party Advisory
https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 Third Party Advisory
https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/ Third Party Advisory
https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ Third Party Advisory
https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/ Third Party Advisory
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 Vendor Advisory
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
https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ Third Party Advisory
https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/ Press/Media Coverage
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
History

14 Aug 2025, 14:52

Type Values Removed Values Added
References () https://citrixbleed.com - () https://citrixbleed.com - Third Party Advisory

13 Aug 2025, 19:15

Type Values Removed Values Added
References
  • () https://citrixbleed.com -

14 Jul 2025, 21:09

Type Values Removed Values Added
References () https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/ - () https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/ - Third Party Advisory
References () https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ - () https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ - Third Party Advisory
References () https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/ - () https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/ - Third Party Advisory
References () https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ - () https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ - Third Party Advisory
References () https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/ - () 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
References () https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/ - () https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/ - Press/Media Coverage

12 Jul 2025, 01:15

Type Values Removed Values Added
References
  • () https://horizon3.ai/attack-research/attack-blogs/cve-2025-5777-citrixbleed-2-write-up-maybe/ -
  • () https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ -
  • () https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ -
  • () https://www.bleepingcomputer.com/news/security/cisa-tags-citrix-bleed-2-as-exploited-gives-agencies-a-day-to-patch/ -
  • () https://www.theregister.com/2025/07/10/cisa_citrixbleed_kev/ -

10 Jul 2025, 17:15

Type Values Removed Values Added
References
  • () https://reliaquest.com/blog/threat-spotlight-citrix-bleed-2-vulnerability-in-netscaler-adc-gateway-devices/ -
References () https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 - () https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX693420 - Vendor Advisory
References () https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 - () https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 - Third Party Advisory
First Time Citrix netscaler Gateway
Citrix
Citrix netscaler Application Delivery Controller
CWE CWE-908
CPE cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

09 Jul 2025, 18:15

Type Values Removed Values Added
References
  • () https://doublepulsar.com/citrixbleed-2-exploitation-started-mid-june-how-to-spot-it-f3106392aa71 -

24 Jun 2025, 01:15

Type Values Removed Values Added
Summary Insufficient input validation leading to memory overread on the NetScaler Management Interface NetScaler ADC?and NetScaler Gateway 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

17 Jun 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-17 13:15

Updated : 2025-08-14 14:52

NVD link : CVE-2025-5777

Mitre link : CVE-2025-5777

JSON object : View

Products Affected

citrix

  • netscaler_application_delivery_controller
  • netscaler_gateway
CWE
CWE-908

Use of Uninitialized Resource