CVE-2021-21787

Katalog CVE

CVSS 8.8 · High EPSS 0,34%

Kerentanan Exposed IOCTL with Insufficient Access Control pada iobit advanced systemcare ultimate. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0d8, the first dword passed in the input buffer is the device port to write to and the byte at offset 4 is the value to write via the OUT instruction. The OUT instruction can write one byte to the given I/O device port, potentially leading to escalated privileges of unprivileged users.

Rincian

Terbit di NVD

7 Juli 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-782: Exposed IOCTL with Insufficient Access Control

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1254 exploit · advisory pihak ketiga