Known Vulnerabilities for Steam Client by Valvesoftware

Listed below are 9 of the newest known vulnerabilities associated with "Steam Client" by "Valvesoftware".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-107448 json Magic: The Gathering Arena (Windows/Steam client; 2026.59.30.12801.127931.6 and certain later 2026.60.x builds) passes a serv... Not Provided 2026-10-08 2026-10-10
CVE-2026-98945 json In the Linux kernel, the following vulnerability has been resolved: HID: steam: Rearrange teardown sequence This fixes a na... Not Provided 2026-10-23 2026-10-26
CVE-2026-98944 json In the Linux kernel, the following vulnerability has been resolved: HID: steam: Refactor registration This refactors and si... Not Provided 2026-10-23 2026-10-26
CVE-2026-41210 json Moonlight Qt is a GameStream client for Windows, macOS, Linux, and Steam Link. In version 6.1.0 and earlier, after a victim i... Not Provided 2026-10-12 2026-10-13
CVE-2021-30481 json Valve Steam through 2021-04-10, when a Source engine game is installed, allows remote authenticated users to execute arbitrar... 9 - CRITICAL 2021-04-10 2022-02-07
CVE-2020-15530 json An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\SYSTEM privil... 7.8 - HIGH 2020-07-05 2021-07-21
CVE-2019-17180 json Valve Steam Client before 2019-09-12 allows placing or appending partially controlled filesystem content, as demonstrated by ... 7.8 - HIGH 2019-10-04 2020-01-16
CVE-2019-15316 json Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORI... 7 - HIGH 2019-08-21 2020-08-24
CVE-2019-15315 json Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local users ca... 7.8 - HIGH 2019-08-21 2020-08-24
CVE-2019-14743 json In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for t... 6.6 - MEDIUM 2019-08-07 2020-08-24
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationValvesoftwareSteam Client2019-09-12
ApplicationValvesoftwareSteam Client2019-09-12
ApplicationValvesoftwareSteam Client2019-09-10
ApplicationValvesoftwareSteam Client2019-08-21
ApplicationValvesoftwareSteam Client2019-08-20
ApplicationValvesoftwareSteam Client2019-08-16
ApplicationValvesoftwareSteam Client2019-08-12
ApplicationValvesoftwareSteam Client2019-08-05
ApplicationValvesoftwareSteam Client2019-07-16
ApplicationValvesoftwareSteam Client2019-06-17
ApplicationValvesoftwareSteam Client2019-06-14
ApplicationValvesoftwareSteam Client2019-06-13
ApplicationValvesoftwareSteam Client2019-04-29
ApplicationValvesoftwareSteam Client2019-04-16
ApplicationValvesoftwareSteam Client2019-03-05
ApplicationValvesoftwareSteam Client2019-02-18
ApplicationValvesoftwareSteam Client2019-02-01
ApplicationValvesoftwareSteam Client2019-01-04
ApplicationValvesoftwareSteam Client2018-11-26
ApplicationValvesoftwareSteam Client2018-11-09
Results limited to 20 most recent known configurations

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