CVE-2020-27867
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11653.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
22- NETGEAR/Multiple Routersv5Range: firmware version 1.2.0.62_1.0.1
Patches
Vulnerability mechanics
References
2- kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-RoutersnvdVendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-1423/nvdThird Party AdvisoryVDB Entry
News mentions
1- RondoDox: From Targeting Pwn2Own Vulnerabilities to Shotgunning ExploitsTrend Micro Research · Oct 9, 2025