Authenticated command injection in NETGEAR mini_httpd funjsq_access_token
CVE-2020-27867 is a command injection vulnerability affecting multiple NETGEAR router models, including R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400. The flaw exists in the mini_httpd service exposed on TCP/80 by default. Specifically, when processing the funjsq_access_token parameter, the service fails to properly validate attacker-controlled input before passing it to a system call. Although exploitation is nominally authenticated, the product's authentication mechanism can be bypassed, allowing a network-adjacent attacker to reach the vulnerable code path and execute arbitrary commands. Successful exploitation results in arbitrary code execution as root on the device.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Recent activity
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A command injection vulnerability in Netgear routers' mini_httpd service exploited by RondoDox.
Unknown (content lists this CVE in activity tables without describing the vulnerability).
Vulnerability observed in exploitation telemetry (details not specified in the content).
The version that knows your environment.
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.