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CVE-2025-52906 is a critical unauthenticated OS command injection vulnerability in the TOTOLINK X6000R router, affecting firmware through V9.4.0cu.1360_B20241207. The flaw is reported in the setEasyMeshAgentCfg function exposed via the router web interface, which relies on the /cgi-bin/cstecgi.cgi endpoint and dispatches functionality based on the topicurl parameter. According to the provided content, improper validation and sanitization of the agentName parameter allows attacker-controlled input to reach OS command execution logic. The firmware includes an input-sanitization routine, but it uses an incomplete blocklist that fails to neutralize dangerous characters adequately, enabling command injection. Because the vulnerable function is reachable without authentication, a remote attacker who can access the web interface can execute arbitrary commands on the device.
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A critical vulnerability in TOTOLINK, details not specified in the content.
A critical unauthenticated remote code execution vulnerability affecting TOTOLINK X6000R routers.
A critical unauthenticated command injection vulnerability in the TOTOLINK X6000R router's setEasyMeshAgentCfg function that allows remote attackers to execute arbitrary commands on the device.
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.