CVE-2020-15530: valvesoftware steam client

csirt@kutim:~/threat-intel/cve/CVE-2020-15530

CVSS 7.8 · High EPSS 0,55%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada valvesoftware steam client. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\SYSTEM privileges because some parts of %PROGRAMFILES(X86)%\Steam and/or %COMMONPROGRAMFILES(X86)%\Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks.

Rincian

Terbit di NVD: 5 Juli 2020
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
EPSS (30 hari): 0,55% peluang dieksploitasi; lebih tinggi dari 44,1% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
valvesoftware	steam client	Versi 2.10.91.91

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

http://daniels-it-blog.blogspot.com/2020/07/steam-arbitrary-code-execution-part-2.html exploit · advisory pihak ketiga

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.