CVE-2021-34865
Estado: ModificadaAlta (8.8)—
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13313.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 3.08%
- Percentil entre todas las CVEs puntuadas: 87
- Fecha de la puntuación: 3/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (17)
Netgear — Ac2100 FirmwareNetgear — Ac2400 FirmwareNetgear — Ac2600 FirmwareNetgear — D7000v1 FirmwareNetgear — R6220 FirmwareNetgear — R6230 FirmwareNetgear — R6260 FirmwareNetgear — R6330 FirmwareNetgear — R6350 FirmwareNetgear — R6700v2 FirmwareNetgear — R6800 FirmwareNetgear — R6850 FirmwareNetgear — R6900v2 FirmwareNetgear — R7200 FirmwareNetgear — R7350 FirmwareNetgear — R7400 FirmwareNetgear — R7450 Firmware
CWE
- CWE-287
- CWE-697
Referencias
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/
JSON original (NVD)
Mostrar
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