CVE-2021-1389: cisco ios xr +1 lainnya

csirt@kutim:~/threat-intel/cve/CVE-2021-1389

CVSS 6.5 · Medium EPSS 1,2%

Kerentanan Improper Access Control pada cisco ios xr, cisco nx-os. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

A vulnerability in the IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL.

Rincian

Terbit di NVD: 4 Februari 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-284: Improper Access Control
EPSS (30 hari): 1,2% peluang dieksploitasi; lebih tinggi dari 67,9% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
cisco	ios xr	Semua versi sebelum 6.6.3
cisco	ios xr	Versi 7.1.0
cisco	ios xr	Versi 7.2.0
cisco	nx-os	Semua versi

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-acl-CHgdYk8j 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.