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CVE-2021-36380 is an unauthenticated operating system command injection vulnerability in Sunhillo SureLine before version 8.7.0.1.1. The flaw is exposed through the web interface endpoint /cgi/networkDiag.cgi, where attacker-controlled input supplied via the ipAddr or dnsAddr parameters is insufficiently sanitized before being incorporated into shell command execution. By injecting shell metacharacters into these parameters, a remote attacker can cause arbitrary OS commands to be executed by the underlying system. Available reporting indicates successful command execution occurs with root privileges, making this a high-impact remote code execution issue when the management interface is reachable.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced as being exploited/attempted by the Dark.IoT botnet for propagation (the content does not describe the underlying flaw details).
A vulnerability referenced as being exploited/attempted by the Dark.IoT botnet for propagation (exact affected product/impact not detailed in the provided content).
An unauthenticated OS command injection vulnerability in Sunhillo SureLine, allowing remote code execution as root.
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.