How severe is CVE-2019-14743?

CVE-2019-14743 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-14743 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-14743?

CVE-2019-14743 affects Valvesoftware Steam Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-14743?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-14743 published?

CVE-2019-14743 was published on 2019-08-07 and last updated on 2026-06-17.

CVE-2019-14743

CVE-2019-14743 is a medium-severity vulnerability in Valvesoftware Steam Client with a CVSS 3.x base score of 6.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v2: 7.2
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Valvesoftware Steam Client
Published: 2019-08-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-14743?: CVE-2019-14743 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-14743 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-14743?: CVE-2019-14743 affects Valvesoftware Steam Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-14743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-14743 published?: CVE-2019-14743 was published on 2019-08-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*

More vulnerabilities in Valvesoftware Steam Client

CVE-2021-30481 — High (CVSS 8.0): Valve Steam before 2021-04-17, when a Source engine game is installed, allows remote authenticated users to execute…
CVE-2020-15530 — High (CVSS 7.8): An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\SYSTEM…
CVE-2019-17180 — High (CVSS 7.8): Valve Steam Client before 2019-09-12 allows placing or appending partially controlled filesystem content, as…
CVE-2019-15315 — High (CVSS 7.8): Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local…
CVE-2015-7985 — High (CVSS 7.2): Valve Steam 2.10.91.91 uses weak permissions (Users: read and write) for the Install folder, which allows local users…
CVE-2019-15316 — High (CVSS 7.0): Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT…

All CVEs affecting Valvesoftware Steam Client →

Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities

CVE-2026-9508 — Critical (CVSS 10.0): Incorrect permission settings on a critical resource in Suprema BioStar 2 (versions 2.9.3 through 2.9.11) that allow…
CVE-2025-14988 — Critical (CVSS 10.0): A security issue has been identified in ibaPDA that could allow unauthorized actions on the file system under certain…
CVE-2025-69426 — Critical (CVSS 10.0): The Ruckus vRIoT IoT Controller firmware versions prior to 3.0.0.0 (GA) contain hardcoded credentials for an operating…
CVE-2025-12004 — Critical (CVSS 10.0): Incorrect Permission Assignment for Critical Resource vulnerability in The Wikimedia Foundation Mediawiki - Lockdown…
CVE-2014-125121 — Critical (CVSS 10.0): Array Networks vAPV (version 8.3.2.17) and vxAG (version 9.2.0.34) appliances are affected by a privilege escalation…
CVE-2025-46093 — Critical (CVSS 9.9): LiquidFiles before 4.1.2 supports FTP SITE CHMOD for mode 6777 (setuid and setgid), which allows FTPDrop users to…

Browse all CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities →