MEDIUM
CVE-2019-14743
CWE-732Published: August 7, 2019· Updated: Jun 17, 2026
6.6
CVSS v3.1
Official 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.
Technical Analysis
CVE-2019-14743 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.6.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Microsoft1 product(s)
windows
valvesoftware1 product(s)
steam client
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
https://amonitoring.ru/article/steamclient-0day/Exploit · Patch · Third Party Advisory
→
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://habr.com/ru/company/pm/blog/462479/Exploit · Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2019-14743
CVSS Score6.6 / 10
SeverityMEDIUM
WeaknessCWE-732
CISA KEVNo
Affected2 vendor(s)
PublishedAug 7, 2019
Related CVEs (CWE-732)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-14743 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.