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CVE-2020-28188 is a remote command execution vulnerability in TerraMaster TOS affecting versions up to and including 4.2.06. The flaw is caused by insufficient input validation of the event parameter in the /include/makecvs.php endpoint, allowing attacker-controlled input to be incorporated into operating system command execution. A remote, unauthenticated attacker can exploit this weakness by sending a crafted request to the vulnerable PHP page and injecting arbitrary OS commands, resulting in code execution on the underlying server.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module targeting TerraMaster TOS (versions 4.2.06 and lower) for unauthenticated remote code execution (RCE) via CVE-2020-35665. The exploit abuses shell metacharacter injection in the 'Event' parameter of the '/include/makecvs.php' endpoint, allowing an attacker to upload a web shell or execute arbitrary commands without authentication. The module supports multiple payloads, including PHP meterpreter, Unix command reverse shell, and Linux binary droppers, and can automatically clean up artifacts after exploitation. It fingerprints the target's TOS version and CPU architecture via the '/tos/index.php?user/login' endpoint. The exploit is weaponized, providing reliable, repeatable RCE with post-exploitation capabilities. The code is written in Ruby and is structured as a standard Metasploit exploit module.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting TerraMaster TOS 4.2.06 and earlier that Necro is still exploiting.
Unknown (content lists this CVE in activity tables without describing the vulnerability).
Vulnerability observed in exploitation telemetry (details not specified in the content).
A remote code execution vulnerability in TerraMaster TOS that the MANGA Mirai variant attempts to exploit.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.