{"id":"CVE-2019-17180","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-17180","generatedAt":"2026-10-27T23:42:49.400Z","title":"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.","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.","published":"2019-10-04T20:15:11.000Z","lastModified":"2026-06-17T02:23:25.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-22"],"affected":["valvesoftware/steam client"],"epss":{"score":0.00717,"percentile":0.53522,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://amonitoring.ru/article/steam_vuln_3/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://habr.com/ru/company/pm/blog/469507/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://hackerone.com/reports/583184","source":"cve@mitre.org"},{"url":"https://hackerone.com/reports/682774","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://store.steampowered.com/news/54236/","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://amonitoring.ru/article/steam_vuln_3/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://habr.com/ru/company/pm/blog/469507/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/583184","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/682774","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://store.steampowered.com/news/54236/","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-17180","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}