CVE-2025-5777 PoC — NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread

Source

https://github.com/idobarel/CVE-2025-5777

Associated Vulnerability

Title:NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread (CVE-2025-5777)
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

Description

CitrixBleed2 poc

Readme

# CVE-2025-5777 
(AKA CitrixBleed 2) Is an OOB read in the login process of Citrix Gateway. <br>
This is a Proof of Concept exploiting the OOB (CVE-2025-5777) to obtain memory data from a vulnerable Citrix Gateway instance, possibly leading to cookies/credentials theft.

## Usage
I highly recommend using a `venv` when using the script. <br>
```
usage: main.py [-h] [-t THREADS] [-o OUTPUT] url

positional arguments:
  url                   target URL

options:
  -h, --help            show this help message and exit
  -t THREADS, --threads THREADS
                        number of threads [10]
  -o OUTPUT, --output OUTPUT
                        output file [leak.dump]
```

## Technical details
An amazing writeup by [@watchTowr](https://twitter.com/watchtowrcyber) || [watchtowr writeup](https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/)

File Snapshot


 [4.0K]  /data/pocs/44dfcde472004f4a5270f633e0db6921bcdef851
├── [2.5K]  main.py
├── [ 916]  README.md
└── [  41]  requirements.txt

0 directories, 3 files

Shenlong Bot has cached this for you

Remarks

1. It is advised to access via the original source first.

2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.

View subscription plans →

Goal Reached Thanks to every supporter — we hit 100%!