CVE-2020-27861
Estado: ModificadaAlta (8.8)—
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.
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: 2.03%
- Percentil entre todas las CVEs puntuadas: 80
- Fecha de la puntuación: 6/10/2026
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 (39)
Netgear — Cbk40 FirmwareNetgear — Cbk43 FirmwareNetgear — Cbr40 FirmwareNetgear — Ex6200 FirmwareNetgear — Ex7700 FirmwareNetgear — Ex8000 FirmwareNetgear — Rbk12 FirmwareNetgear — Rbk13 FirmwareNetgear — Rbk14 FirmwareNetgear — Rbk15 FirmwareNetgear — Rbk20 Router FirmwareNetgear — Rbk20 Satellite FirmwareNetgear — Rbk20w FirmwareNetgear — Rbk22 Router FirmwareNetgear — Rbk22 Satellite FirmwareNetgear — Rbk23 Router FirmwareNetgear — Rbk23 Satellite FirmwareNetgear — Rbk23w FirmwareNetgear — Rbk30 FirmwareNetgear — Rbk33 FirmwareNetgear — Rbk40 Router FirmwareNetgear — Rbk40 Satellite FirmwareNetgear — Rbk43 Router FirmwareNetgear — Rbk43 Satellite FirmwareNetgear — Rbk43s Router FirmwareNetgear — Rbk43s Satellite FirmwareNetgear — Rbk44 Router FirmwareNetgear — Rbk44 Satellite FirmwareNetgear — Rbk50 FirmwareNetgear — Rbk50v FirmwareNetgear — Rbk52w FirmwareNetgear — Rbr10 FirmwareNetgear — Rbr20 FirmwareNetgear — Rbr40 FirmwareNetgear — Rbr50 FirmwareNetgear — Rbs10 FirmwareNetgear — Rbs20 FirmwareNetgear — Rbs40 FirmwareNetgear — Rbs50 Firmware
CWE
- CWE-78
- CWE-78
Referencias
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/
- https://kb.netgear.com/000062507/Security-Advisory-for-Unauthenticated-Command-Injection-Vulnerability-on-Some-Extenders-and-Orbi-WiFi-Systems
- https://www.zerodayinitiative.com/advisories/ZDI-20-1430/
JSON original (NVD)
Mostrar
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