CVE-2019-14743
In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for the Users group, which allows local users to gain NT AUTHORITY\SYSTEM access.
Does this matter?
Lower severity and a low EPSS score (0.62%). Track it; it rarely justifies an emergency change on its own.
Description
In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for the Users group, which allows local users to gain NT AUTHORITY\SYSTEM access.
- CVSS 3.0
- 6.6 MEDIUMCVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.62% probability · 49th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- valvesoftware/steam client
- Source
- cve@mitre.org
EPSS 0.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://amonitoring.ru/article/steamclient-0day/Exploit, Patch, Third Party Advisory
- https://github.com/alexanderbittner/steam-privesc/
- https://habr.com/ru/company/pm/blog/462479/Exploit, Patch, Third Party Advisory
- https://amonitoring.ru/article/steamclient-0day/Exploit, Patch, Third Party Advisory
- https://github.com/alexanderbittner/steam-privesc/
- https://habr.com/ru/company/pm/blog/462479/Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.