Cisco — Cucm Hacking -- Github

# Common CUCM ports
nmap -p 22,80,443,8443,2427,2428,2000,5060,5061 <target>

Repository example: CUCM-RCE-exploit

Once inside, attackers need persistence. GitHub hosts multiple Metasploit modules and standalone Python scripts that exploit known CVEs (e.g., CVE-2020-3323, CVE-2021-34770) to gain root shells.

As Cisco moves toward cloud-based Webex Calling and UCM Cloud, on-prem CUCM will slowly age. But enterprises have a 10–15 year lifecycle for telephony. During that time, GitHub will remain the go-to source for CUCM hacking techniques.

To answer the search query “Cisco CUCM hacking -- GitHub”: Yes, the tools exist. Yes, they work. And yes, your phone system is likely vulnerable if you haven't patched CVE-2023-20200 or enforced MFA on the AXL interface.

The best defense is not hiding from GitHub—it is using the same code to break your own system before the bad guys do.

Disclaimer: This article is for informational and defensive security purposes only. Unauthorized access to Cisco CUCM systems violates the Computer Fraud and Abuse Act (CFAA) and similar laws worldwide. Always obtain written permission before testing any security tool on a production network.

Cisco CUCM Hacking: A Write-up

Cisco Unified Communications Manager (CUCM) is a popular call processing and routing system used by businesses to manage their voice and video communications. While CUCM is designed to be a secure and reliable platform, like any complex system, it can be vulnerable to hacking attempts.

Understanding CUCM Security Risks

CUCM's security risks can arise from various factors, including:

GitHub Resources for CUCM Hacking

Several GitHub repositories provide tools and resources for testing CUCM security:

Common CUCM Hacking Techniques

Some common techniques used to hack CUCM systems include:

Protecting CUCM Systems from Hacking

To protect CUCM systems from hacking attempts:

Conclusion

CUCM hacking is a serious security threat that can compromise the integrity of business communications. By understanding CUCM security risks, using GitHub resources to test security, and implementing robust security measures, businesses can protect their CUCM systems from hacking attempts.

Cisco Unified Communications Manager (CUCM) security research often centers on misconfigurations that expose sensitive data, particularly via phone configuration files. On GitHub, security professionals and researchers host various tools and scripts designed to audit, exploit, or secure these environments. Notable GitHub Tools for CUCM Security Auditing

Researchers use these tools to identify common attack vectors such as credential leakage and improper API access.

SeeYouCM-Thief: A popular multi-threaded tool that automatically downloads and parses configuration files from Cisco phone systems. It searches for SSH credentials, passwords, and usernames often stored in plaintext. It also includes features for MAC address brute-forcing and user enumeration via the CUCM User Data Services (UDS) API. Find it here: SeeYouCM-Thief on GitHub.

iCULeak.py: A focused Python script that extracts credentials from phone configuration files stored on TFTP servers. It specifically addresses issues where browsers or password managers might autofill sensitive CUCM credentials into configuration fields. Find it here: iCULeak.py on GitHub.

Routersploit (CUCM Modules): This exploitation framework contains modules specifically for CUCM, such as the unified_multi_path_traversal.py script, which exploits path traversal vulnerabilities to read files from the filesystem.

Find the module here: Unified Multi Path Traversal on GitHub.

Cisco-UCM-SQLi-Scripts: A collection of scripts used to exploit CVE-2019-15972, an authenticated SQL injection (SQLi) vulnerability in earlier versions of CUCM. Find it here: Cisco-UCM-SQLi-Scripts on GitHub. Vulnerability Research & Advisories

Several repositories and Gists provide deeper insights into specific CUCM vulnerabilities and "hacking" techniques:

Cisco CUCM Hacking Gist: A technical Gist detailing commands for disabling specific services like the Smart License Manager (SLM) and preventing system registrations. View the Gist: Cisco CUCM hacking - GitHub Gist. Cisco CUCM hacking -- GitHub

GitHub Security Advisories: GitHub tracks critical CUCM vulnerabilities, such as:

GHSA-3q7w-9xf2-2f3g: A high-severity vulnerability with a CVSS score of 10.0.

GHSA-4c73-jxqq-mjrg: An authenticated remote code execution vulnerability in the SOAP API endpoint. Defensive & Management Tools

While primarily for administrators, these tools are used in security contexts to audit configurations and automate compliance: unified_multi_path_traversal.py - GitHub

Hacking content related to Cisco Unified Communications Manager (CUCM)

on GitHub primarily focuses on exploiting misconfigurations in phone systems, credential harvesting, and bypassing license restrictions. Popular Pentesting & Exploitation Tools

Researchers use these tools to identify weaknesses in how CUCM manages and serves configuration files to VoIP endpoints. SeeYouCM-Thief

: A multi-threaded tool designed to automatically download and parse Cisco phone configuration files from TFTP or HTTP servers. It can extract SSH credentials, usernames, and passwords that are often stored in plaintext. iCULeak.py

: Similar to SeeYouCM-Thief, this script extracts credentials from configuration files and can even attempt to verify if leaked credentials are valid against Active Directory (AD). unified_multi_path_traversal.py

: Part of the RouterSploit framework, this module exploits path traversal vulnerabilities to read arbitrary files from the CUCM filesystem. Known Critical Vulnerabilities (GitHub Advisories)

GitHub's advisory database tracks critical CUCM vulnerabilities that could lead to full system takeover. Static Root Credentials (CVE-2025-20309)

: A maximum-severity vulnerability where unauthenticated remote attackers could log in using hard-coded root credentials that cannot be changed or deleted. Remote Code Execution (RCE)

: Vulnerabilities in the web-based management interface allow attackers to execute arbitrary commands by sending crafted HTTP requests, potentially elevating privileges to root. CLI Command Injection

: Authenticated attackers with administrative access can exploit improper validation in CLI arguments to execute operating system commands as root. Workarounds & "Hacks"

Some community-shared content focuses on bypassing functional limitations rather than security exploitation.

Cisco Unified Communications Manager (CUCM) is the core of many enterprise telephony networks, making it a high-value target for security researchers and red teams. The intersection of CUCM hacking and GitHub provides a wealth of tools and documentation for identifying vulnerabilities and misconfigurations. Common Vulnerabilities and GitHub Advisories

GitHub’s Advisory Database tracks several critical vulnerabilities impacting CUCM environments, often including Proof-of-Concept (PoC) references.

Static Root Credentials (CVE-2025-20309): A critical vulnerability where unauthenticated, remote attackers can log in to affected devices using default, static root credentials that cannot be changed or deleted.

Remote Code Execution (CVE-2024-20253): Improper processing of user-provided data can allow unauthenticated attackers to execute arbitrary code with web services user privileges.

CLI Privilege Escalation: Vulnerabilities in the CUCM Command Line Interface (CLI) may allow authenticated local attackers to execute commands as the root user by bypassing command validation.

Web-Based Cross-Site Scripting (XSS): Multiple advisories, such as GHSA-34jc-mc86-8ww9 and GHSA-Fnj66YLy, document flaws in the web management interface that allow attackers to inject malicious scripts into authenticated sessions. Key Hacking and Research Tools on GitHub

Security professionals use various GitHub repositories to automate the discovery and exploitation of CUCM misconfigurations.

Security research on GitHub details vulnerabilities in Cisco Unified Communications Manager (CUCM), including Remote Code Execution (CVE-2024-20253) and insecure TFTP configurations. Securing the environment requires monitoring official Cisco advisories, applying patches, and implementing hardening guides to restrict access. You can find related technical discussions and resources on GitHub.

Cisco CUCM Hacking Tools on GitHub: A Review

The Cisco Unified Communications Manager (CUCM) is a widely used call processing and voicemail system in enterprise environments. As with any complex system, there are potential security vulnerabilities that can be exploited by malicious actors. GitHub, a popular platform for developers and security researchers, hosts various projects and tools related to CUCM hacking.

Repositories and Tools

Several GitHub repositories offer tools and scripts for CUCM hacking, including:

Features and Functionality

The tools hosted on GitHub for CUCM hacking offer various features, including:

Pros and Cons

Pros:

Cons:

Conclusion

The GitHub repositories hosting CUCM hacking tools serve as a reminder of the importance of securing complex systems like CUCM. While these tools can be used for malicious purposes, they also offer opportunities for security researchers and administrators to test and improve the security of their systems.

Recommendations

By understanding the tools and techniques available for CUCM hacking, administrators can take proactive steps to secure their systems and protect against potential threats.

Cisco Unified Communications Manager (CUCM) is a frequent target for security research because it acts as the "brain" of corporate VoIP networks. Hacking and penetration testing resources for CUCM on GitHub typically focus on exploiting common misconfigurations, such as insecure TFTP servers or static credentials. Notable Hacking & Security Tools on GitHub SeeYouCM-Thief

: One of the most prominent tools for attacking CUCM environments. It automates the discovery of IP phones and identifies the associated CUCM server. It exploits a common misconfiguration where phone configuration files containing plaintext SSH/admin credentials are stored on unencrypted TFTP servers. iCULeak.py

: A specialized script designed to find and extract credentials from phone configuration files. It specifically targets a vulnerability where administrators' browser autofill or password managers might inadvertently save CUCM credentials into phone config fields in plaintext. RouterSploit (unified_multi_path_traversal.py)

: This framework includes a module specifically for a path traversal vulnerability in CUCM. If successful, it allows an attacker to read arbitrary files from the CUCM filesystem. Cisco-Torch

: A veteran mass-scanning and fingerprinting tool used to identify and exploit various Cisco devices, including those running CUCM services. Critical Vulnerabilities Often Discussed trustedsec/SeeYouCM-Thief · GitHub

The "long piece" refers to a technical GitHub Gist "Cisco CUCM hacking" maintained by user

. It serves as a community-driven guide for bypassing licensing restrictions, extending demo periods, and gaining root access to Cisco Unified Communications Manager (CUCM) systems. Key Technical Methods Mentioned

The Gist and its associated comments outline several specific techniques for modifying CUCM behavior: Extending Demo Licenses:

For CUCM 12+, users suggest disabling the Smart License Manager to keep demo licenses active. chmod 000 /usr/local/cm/bin/SmartLicenseMgr /usr/local/platform/script/slm/slm_drf_reg.py unregister to prevent backup errors related to the disabled service. Root Access & Shell Escalation:

The piece often discusses methods to break out of the restricted Cisco CLI (Admin SSH) into a standard Linux bash shell to modify system files. Legacy License Modification: Older versions of the guide focused on modifying LicenseParams.xml VMLicenseParams.xml

to increase Device License Units (DLUs), though users report these files are absent in newer versions. Banner Removal:

Techniques for removing "Evaluation Mode" or "Unregistered" warning banners from the web interface. Important Considerations Educational/Lab Use:

These "hacks" are primarily used by engineers in home labs or sandbox environments to avoid the high cost of Cisco licensing for study purposes. Stability Risks: Disabling core services like SmartLicenseMgr

can cause unexpected behavior in Disaster Recovery Framework (DRF) backups or system upgrades. Legal & Compliance:

Applying these modifications in a production environment violates Cisco's End User License Agreement (EULA) and may lead to a loss of official support.

Auditing Cisco CUCM Security: Top Tools and Critical Vulnerabilities As Cisco moves toward cloud-based Webex Calling and

Securing a Cisco Unified Communications Manager (CUCM) environment is a high-stakes task. Because it serves as the "brain" of a VoIP network, it is a primary target for attackers looking to intercept calls, steal credentials, or pivot into other areas of the enterprise network.

This post explores common vulnerabilities found in CUCM environments and highlights powerful open-source tools on GitHub that security professionals use to audit these systems. Common Vulnerabilities in CUCM Environments

Attackers typically look for "low-hanging fruit" in VoIP configurations. Some of the most critical risks include: Credential Leaks in TFTP Configs

: Cisco IP phones often download their configuration files (XML) from a TFTP server. These files frequently contain sensitive data, including SSH/admin credentials and server IP addresses, sometimes even stored in plaintext. Static Root Credentials

: Some versions of CUCM have historically been vulnerable to default, static root account credentials that were intended for development use but remained in production releases. Remote Code Execution (RCE)

: Vulnerabilities in the web-based management interface, such as CVE-2024-20253

, have allowed unauthenticated remote attackers to execute arbitrary commands by sending crafted HTTP requests. Privilege Escalation

: Researchers have identified flaws where authenticated users can use permissive

rights or improper CLI argument validation to gain root access to the underlying operating system. Essential Auditing Tools on GitHub

To proactively find these holes, security researchers use specialized tools available on GitHub: SeeYouCM-Thief

: A multi-threaded tool by TrustedSec designed to automatically discover phones, download their configuration files via TFTP/HTTP, and parse them for SSH credentials and other sensitive data. iCULeak.py

: Specifically targets the extraction of credentials from phone configuration files. It also highlights risks where browser autofill or password managers might accidentally save admin credentials into these plaintext files. cisco-torch

: A classic mass scanning and fingerprinting tool used for identifying Cisco services and potential exploitation paths across a network. cucm-exporter

: While not an "attack" tool, this utility is used by admins and auditors to easily export user lists and phone inventories to CSV for security reviews. Best Practices for Hardening

Auditing is only half the battle. To secure your CUCM deployment, follow these foundational steps:

Interesting topic!

Cisco Unified Communications Manager (CUCM) is a popular call processing and routing system used in many enterprise networks. Like any complex software, it's not immune to potential security vulnerabilities.

A quick search on GitHub reveals some interesting projects and repositories related to CUCM hacking:

Keep in mind that hacking into CUCM systems without authorization is likely illegal and can have serious consequences. These repositories might be used for educational purposes, penetration testing, or research, but it's essential to ensure you're operating within the bounds of the law and with proper permissions.

If you're interested in learning more about CUCM security, I recommend checking out:

Would you like to know more about CUCM security or is there something specific you'd like to explore?

# AXL API brute force example (authorized testing only)
import requests
requests.packages.urllib3.disable_warnings()
target = "https://cucm-ip/axl/"
payloads = ["admin","Administrator","CUCMAdmin"]

Here is a timeline of CUCM vulnerabilities that had active GitHub repositories within days of disclosure.

| CVE ID | Description | GitHub Exploit Available | Impact | |--------|-------------|--------------------------|--------| | CVE-2023-20200 | Unauthorized access to AXL API | Yes (Proof of concept) | Full admin read/write | | CVE-2021-34770 | SQL injection in the risport.cgi | Yes (Metasploit module) | User hash dump | | CVE-2019-16057 | Path traversal in Tomcat | Yes (Python script) | Arbitrary file read | | CVE-2018-0452 | Command injection in CDP service | Yes (Perl exploit) | Remote root shell |

Note: Many of these repos are labeled “educational” but contain fully weaponized code. I recommend checking out:

Repository examples: cucm-creds, AXL-SQL-injection

CUCM uses an API called AXL (Administrative XML Layer). Many old versions (12.x and below) are vulnerable to SQL injection or weak SOAP authentication.