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CVE-2021-27692 is a command injection vulnerability in Tenda G1 and G3 routers running firmware v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN. A remote attacker can send a crafted request to the "action/umountUSBPartition" endpoint and reach the "formSetUSBPartitionUmount" function, which passes attacker-controlled input to the "doSystemCmd" function without proper sanitization or neutralization. This results in OS command injection and arbitrary command execution on the underlying router operating system.
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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.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.