CVE-2023-20233: cisco ios xr

csirt@kutim:~/threat-intel/cve/CVE-2023-20233

CVSS 6.5 · Medium EPSS 0,34%

Kerentanan NULL Pointer Dereference pada cisco ios xr. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

A vulnerability in the Connectivity Fault Management (CFM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incorrect processing of invalid continuity check messages (CCMs). An attacker could exploit this vulnerability by sending crafted CCMs to an affected device. A successful exploit could allow the attacker to cause the CFM service to crash when a user displays information about maintenance end points (MEPs) for peer MEPs on an affected device.

Rincian

Terbit di NVD: 13 September 2023
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:R/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-476: NULL Pointer Dereference
CWE-354: Improper Validation of Integrity Check Value
EPSS (30 hari): 0,34% peluang dieksploitasi; lebih tinggi dari 25,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
cisco	ios xr	Semua versi sebelum 7.5.4
cisco	ios xr	Versi 7.6 hingga sebelum 7.6.3
cisco	ios xr	Versi 7.7 hingga sebelum 7.7.21
cisco	ios xr	Versi 7.8 hingga sebelum 7.8.2
cisco	ios xr	Versi 7.9.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt 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.