CVE-2019-15315
HIGHValve Steam Client for Windows < 2019-08-16 - Privilege Escalation via Binary Replacement
Title source: llmDescription
Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local users can replace the current versions of SteamService.exe and SteamService.dll with older versions that lack the CVE-2019-14743 patch.
References (1)
Core 1
Core References
Third Party Advisory x_refsource_misc
https://xiaoyinl.github.io/steam_EoP_bypass.html
Scores
CVSS v3
7.8
EPSS
0.0039
EPSS Percentile
30.1%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-732
Status
published
Products (1)
valvesoftware/steam_client
< 2019-08-16
Published
Aug 21, 2019
Tracked Since
Feb 18, 2026