CVE-2021-27241

Katalog CVE

CVSS 6.1 · Medium EPSS 0,26%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada avast premium security. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12082.

Rincian

Terbit di NVD

29 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')

EPSS (30 hari)

0,26% peluang dieksploitasi; lebih tinggi dari 16,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.zerodayinitiative.com/advisories/ZDI-21-208/ advisory pihak ketiga · vdb entry