CVE-2020-3511: cisco ios xe

csirt@kutim:~/threat-intel/cve/CVE-2020-3511

CVSS 7.4 · High EPSS 0,43%

Kerentanan Improper Input Validation pada cisco ios xe. Skor CVSS 3.1 7.4 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.

Rincian

Terbit di NVD: 24 September 2020
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.4 (High), sumber NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-20: Improper Input Validation
EPSS (30 hari): 0,43% peluang dieksploitasi; lebih tinggi dari 35,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
cisco	ios xe	Versi 15.1(4)m

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf advisory vendor

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.