HOMEVULNERABILITIESCVE-2019-17180
HIGH

CVE-2019-17180

CWE-22Published: October 4, 2019· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Valve Steam Client before 2019-09-12 allows placing or appending partially controlled filesystem content, as demonstrated by file modifications on Windows in the context of NT AUTHORITY\SYSTEM. This could lead to denial of service, elevation of privilege, or unspecified other impact.

NVD Source

Technical Analysis

CVE-2019-17180 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 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/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
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
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

ADVISORYhttps://amonitoring.ru/article/steam_vuln_3/
ADVISORYhttps://habr.com/ru/company/pm/blog/469507/
ADVISORYhttps://hackerone.com/reports/682774
ADVISORYhttps://store.steampowered.com/news/54236/
ADVISORYhttps://amonitoring.ru/article/steam_vuln_3/
ADVISORYhttps://habr.com/ru/company/pm/blog/469507/
ADVISORYhttps://hackerone.com/reports/682774
ADVISORYhttps://store.steampowered.com/news/54236/

All References (10)

→
https://amonitoring.ru/article/steam_vuln_3/Exploit · Third Party Advisory
→
https://habr.com/ru/company/pm/blog/469507/Exploit · Third Party Advisory
→
https://hackerone.com/reports/583184
→
https://hackerone.com/reports/682774Exploit · Third Party Advisory
→
https://store.steampowered.com/news/54236/Release Notes · Vendor Advisory
→
https://amonitoring.ru/article/steam_vuln_3/Exploit · Third Party Advisory
→
https://habr.com/ru/company/pm/blog/469507/Exploit · Third Party Advisory
→
https://hackerone.com/reports/583184
→
https://hackerone.com/reports/682774Exploit · Third Party Advisory
→
https://store.steampowered.com/news/54236/Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2019-17180
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected2 vendor(s)
PublishedOct 4, 2019

Related CVEs (CWE-22)

CVE-2009-4000
10.0
CVE-2009-3792
10.0
CVE-2008-3685
10.0
CVE-2009-1161
10.0
CVE-2009-0841
10.0
CVE-2010-1462
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-17180 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.
← All Vulnerabilities·Search for CVE-2019-17180·NVD