CVE-2025-27998

8.4 highEPSS 0.2%

High (8.4). EPSS 0.2% chance of exploitation in the next 30 days.

An issue in Valvesoftware Steam Client Steam Client 1738026274 allows attackers to escalate privileges via a crafted executable or DLL.

Severity

8.4 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2025-05-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19