{"cve":"CVE-2020-27867","nvd":{"published":"2021-02-12T00:15:12.970","modified":"2026-06-17T03:09:46.327","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.8},"cwes":["CWE-77"],"references":["https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers","https://www.zerodayinitiative.com/advisories/ZDI-20-1423/","https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers","https://www.zerodayinitiative.com/advisories/ZDI-20-1423/"],"products":["netgear:ac2100_firmware","netgear:ac2400_firmware","netgear:ac2600_firmware","netgear:r6020_firmware","netgear:r6080_firmware","netgear:r6120_firmware","netgear:r6220_firmware","netgear:r6230_firmware","netgear:r6260_firmware","netgear:r6330_firmware","netgear:r6350_firmware","netgear:r6700_firmware","netgear:r6800_firmware","netgear:r6850_firmware","netgear:r6900_firmware","netgear:r7200_firmware","netgear:r7350_firmware","netgear:r7400_firmware","netgear:r7450_firmware"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2020-27867","score":0.02234,"percentile":0.8278,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}