CVE-2025-5777

7.5 HIGH CISA KEV - Actively Exploited
Published: June 17, 2025 Modified: October 30, 2025
View on NVD

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

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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

10 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
73.3%
99th percentile
Exploitation Status
Actively Exploited
Remediation due: 2025-07-11

Weaknesses (CWE)

CWE-125 CWE-908 CWE-457

Affected Vendors

citrix

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