CVE-2019-15316 describes a privilege escalation vulnerability in the Valve Steam Client for Windows, affecting versions through August 20, 2019. This flaw stems from weak folder permissions, allowing an attacker to achieve NT AUTHORITY\SYSTEM privileges by exploiting a Time-of-Check to Time-of-Use (TOCTOU) race condition using specific executables. With a CVSS score of 7.0 (HIGH), this vulnerability has a local attack vector and high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2019-08-20CPE matchmatch criteria | cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.