> ## Content Index > Fetch the complete content index at: https://darkwebinformer.com/llms.txt > Use this file to discover other available public pages before exploring further. # Alleged sale of 0-day vulnerability affecting TerraMaster NAS – Pre-Auth Remote Code Execution - URL: https://darkwebinformer.com/alleged-sale-of-0-day-vulnerability-affecting-terramaster-nas-pre-auth-remote-code-execution/ - Published: 2025-06-03T15:21:22.000Z - Updated: 2025-09-04T22:21:57.000Z - Author: Dark Web Informer - Tags: Vulnerabilities Γ— ## πŸ“’ Unlock Exclusive Cyber Threat Intelligence Powered by [DarkWebInformer.com](https://darkwebinformer.com/) Get foundational access to breach intelligence β€” track breaches, leaks, and threats in real-time with unfiltered screenshots and expert summaries. πŸ“š **4,000+ Blog Posts:** Continuously updated with breach reports and threat summaries. πŸ“’ **15,000+ Alerts:** Access detailed breach, leak, and DDoS alerts updated daily. πŸ“€ **Unredacted Threat Feed:** Track breaches and leaks in real-time with JSON export support. πŸ” **Leak & Breach Coverage:** Get direct access to verified breach posts and claims. πŸ“‘ **Snippets & Quick Facts:** Receive concise summaries of DDoS, defacements, and breaches. πŸ€– **WhiteIntel.io API Access:** Access an integrated API, in breach blog posts. πŸ–ΌοΈ **High-Resolution Images:** View uncompressed, watermark-free breach evidence. πŸ”‘ **Keyword Notifications:** Receive browser alerts when monitored keywords are triggered. πŸ“§ **Custom Email Alerts:** Get curated daily, weekly, or filtered alert summaries. πŸ‘₯ **Telegram Channels:** Stay in the know with access to different Telegram channels. πŸ“¨ **PGP Contact Details:** Access verified PGPs for ransomware and threat groups. ⚠️ **Coming Soon: CVE Alert Feed** – Be first to know when new vulnerabilities emerge. [πŸ’³ Subscribe Now](https://darkwebinformer.com/#/portal/signup) [πŸͺ™ Pay with Crypto](https://darkwebinformer.com/crypto-payments) ⚠ **Disclaimer** This report includes actual screenshots and/or text that **may include unredacted personally identifiable information (PII)** gathered from **publicly available sources**. The sensitive information presented within this report is intended **solely for cybersecurity awareness and threat intelligence purposes**. **Dark Web Informer explicitly condemns unauthorized access, distribution, or misuse** of the personal data displayed or referenced here. **Users must treat exposed data responsibly and ethically.** --- ## πŸ“Œ Overview A threat actor operating under the alias **skart7** has posted a listing offering a **zero-day remote code execution (RCE)** exploit targeting **TerraMaster NAS** devices. The exploit requires **no authentication** or **user interaction**, and is said to work on **all versions** of TOS 4 and TOS 5, including the latest releases. If real, this vulnerability could allow attackers to obtain **full root access** on affected devices remotely. --- ## πŸ“Š Key Details | Attribute | Information | | -------------- | ------------------------------------------- | | Date | 2025-06-02, 08:54:00 PM | | Threat Actor | skart7 | | Victim Country | China | | Industry | Computer & Network Security | | Organization | TerraMaster | | Victim Site | terra-master.com | | Category | Vulnerability | | Severity | Low (unconfirmed 0-day with unknown spread) | | Network | openweb | Subscriber-only content… --- ## πŸ”— Claim Post (Plain Text) https://forum.exploit.in/topic/260187/ --- ## πŸ“’ Threat Actor’s Claim **Exploit Details:** - **Target:** TerraMaster NAS (TOS 4 and 5, all versions) - **Exploit Type:** Pre-authentication Remote Code Execution - **Privileges Required:** None - **Privileges Gained:** Full root access to NAS device - **Exploit Reliability:** 100% (claimed) - **User Interaction:** None - **Vulnerability Count:** 3 underlying issues exploited - **Compatibility:** Works under default settings - **Multi-Version Support:** All TOS 4 & 5 releases, including the latest **Other Info:** - Forum escrow supported - TOX and Session contact IDs provided for transaction - Request for β€œserious buyers only” --- ## πŸ“Έ Screenshot ![](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2025/06/998438975237598237598723785.png) --- ## πŸ›‘οΈ WhiteIntel.io Data Leak Information Fetching WhiteIntel.io Data... --- ## βš”οΈ Tactics, Techniques, and Procedures (TTPs) | Tactic | Technique ID | Description | | -------------------- | ------------ | ---------------------------------------------------------------- | | Initial Access | T1190 | Exploit Public-Facing Application – Remote attack via NAS web UI | | Execution | T1059 | Command and Scripting Interpreter – Achieve RCE on Linux target | | Privilege Escalation | T1068 | Exploitation of Vulnerability – Root-level access on NAS devices | --- ## 🚨 Potential Risks - Full device takeover of unpatched TerraMaster NAS devices - Remote exfiltration or ransomware deployment without user interaction - Exploit resale or integration into botnets targeting SMB/home NAS environments - Possible zero-day status requiring vendor-side investigation --- ## βœ… Recommended Security Actions - Monitor for incoming traffic to NAS ports from unfamiliar IPs - Temporarily restrict WAN-facing NAS interfaces - Contact TerraMaster support for official security bulletins - Conduct firmware integrity and patch validation - Track and monitor exploit forums for proof-of-concept or resale --- ## πŸ’‘ Final Thoughts If validated, this pre-authentication RCE affecting **TerraMaster TOS 4 and 5** presents a significant threat to **SOHO and SMB environments** using NAS solutions. Its combination of **stealth, privilege escalation, and reliability** make it highly desirable for actors in need of persistence or lateral movement capabilities. --- **Stay informed at** [**DarkWebInformer.com**](https://darkwebinformer.com/)