What’s Vulnerable › Vulnerabilities

CVE-2019-15315

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-21 · updated 2026-06-17
• Weakness: CWE-732

Description

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.

Affected products

• Valvesoftware Steam Client: through 2019-08-16

References

• https://xiaoyinl.github.io/steam_EoP_bypass.html
• https://xiaoyinl.github.io/steam_EoP_bypass.html

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