CVE-2020-3111
Estado: ModificadaAlta (8.8)—
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone.
Leer descripción completaMostrar menos
A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
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: 3.09%
- 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 (33)
Cisco — IP Conference Phone 7832 FirmwareCisco — IP Conference Phone 7832 With Multiplatform FirmwareCisco — IP Conference Phone 8832 FirmwareCisco — IP Conference Phone 8832 With Multiplatform FirmwareCisco — IP Phone 6821 FirmwareCisco — IP Phone 6841 FirmwareCisco — IP Phone 6851 FirmwareCisco — IP Phone 6861 FirmwareCisco — IP Phone 6871 FirmwareCisco — IP Phone 7811 FirmwareCisco — IP Phone 7811 With Multiplatform FirmwareCisco — IP Phone 7821 FirmwareCisco — IP Phone 7821 With Multiplatform FirmwareCisco — IP Phone 7841 FirmwareCisco — IP Phone 7841 With Multiplatform FirmwareCisco — IP Phone 7861 FirmwareCisco — IP Phone 7861 With Multiplatform FirmwareCisco — IP Phone 8811 FirmwareCisco — IP Phone 8811 With Multiplatform FirmwareCisco — IP Phone 8841 FirmwareCisco — IP Phone 8841 With Multiplatform FirmwareCisco — IP Phone 8845 FirmwareCisco — IP Phone 8845 With Multiplatform FirmwareCisco — IP Phone 8851 FirmwareCisco — IP Phone 8851 With Multiplatform FirmwareCisco — IP Phone 8861 FirmwareCisco — IP Phone 8861 With Multiplatform FirmwareCisco — IP Phone 8865 FirmwareCisco — IP Phone 8865 With Multiplatform FirmwareCisco — Unified IP Conference Phone 8831 FirmwareCisco — Unified IP Conference Phone 8831 FOR Third-party Call Control FirmwareCisco — Wireless IP Phone 8821-ex FirmwareCisco — Wireless IP Phone 8821 Firmware
CWE
- CWE-20
- CWE-20
Referencias
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos
- http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos
JSON original (NVD)
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