CVE-2020-11462: openvpn access server

csirt@kutim:~/threat-intel/cve/CVE-2020-11462

CVSS 7.5 · High EPSS 1,3%

Kerentanan Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') pada openvpn access server. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in OpenVPN Access Server before 2.7.0 and 2.8.x before 2.8.3. With the full featured RPC2 interface enabled, it is possible to achieve a temporary DoS state of the management interface when sending an XML Entity Expansion (XEE) payload to the XMLRPC based RPC2 interface. The duration of the DoS state depends on available memory and CPU speed. The default restricted mode of the RPC2 interface is NOT vulnerable.

Rincian

Terbit di NVD: 4 Mei 2020
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
EPSS (30 hari): 1,3% peluang dieksploitasi; lebih tinggi dari 69,3% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
openvpn	openvpn access server	Semua versi sebelum 2.7.0
openvpn	openvpn access server	Versi 2.8.0 hingga 2.8.3

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://openvpn.net/vpn-server-resources/release-notes/#Release_notes_for_OpenVPN_Access_Server_283 release notes · 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.