CVE•Published 2025-06-17•2 articles on news•7 live references•NVD data
CVE-2025-5777
Vulnerability data via CVEDB (Shodan)
CVSS v3.1
9.3
CRITICAL
EPSS percentile
100
Exploit Prediction Scoring System · top 0% of all CVEs
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
Timeline
Published 2025-06-17
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag405 hosts
vuln:CVE-2025-5777Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Citrix Netscaler Application Delivery Controller" version:"12.1"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Netscaler Application Delivery Controller"HTTP body or banner mentions "Netscaler Application Delivery Controller" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2025-5777Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-5777Censys host search filtered to this CVE id.
grep.app
CVE-2025-5777Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-5777GitHub code search for direct mentions.
Google dork
"CVE-2025-5777" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (8)
CVE-2025-57778 repos
nomi-sec/PoC-in-GitHubunknown
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
0xor0ne/awesome-listunknown
Cybersecurity oriented awesome list
scriptingxss/owasp-fstmunknown
The Firmware Security Testing Methodology (FSTM) is composed of nine stages tailored to enable security researchers, software developers, consultants, and Information Security prof…
fox-it/citrix-netscaler-triagePython
Dissect triage scripts for Citrix NetScaler devices
win3zz/CVE-2025-5777Python
CVE-2025-5777 (CitrixBleed 2) - Critical memory leak vulnerability affecting Citrix NetScaler ADC and Gateway devices
bughuntar/CVE-2025-5777Python
CVE-2025-5777 Citrix NetScaler Memory Leak Exploit (CitrixBleed 2)
tylzars/awesome-vrre-writeupsunknown
A collection of Vulnerability Research and Reverse Engineering writeups.
mingshenhk/CitrixBleed-2-CVE-2025-5777-PoC-Python
详细讲解CitrixBleed 2 — CVE-2025-5777（越界泄漏）PoC 和检测套件