{"id":"CVE-2021-36958","published":"2021-08-12T18:12:42Z","modified":"2026-08-10T15:10:10Z","title":"Windows Print Spooler Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Windows 10 Version 1507","tier":"core","eol":null,"affectedVersions":[{"vendor":"Microsoft","product":"Windows 10 Version 1507","versions":[">= 10.0.10240.0, < 10.0.10240.19060"]},{"vendor":"Microsoft","product":"Windows 10 Version 1607","versions":[">= 10.0.14393.0, < 10.0.14393.4651"]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.17763.0, < 10.0.17763.2183"]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.0, < 10.0.17763.2183"]},{"vendor":"Microsoft","product":"Windows 10 Version 1909","versions":[">= 10.0.0, < 10.0.18363.1801"]},{"vendor":"Microsoft","product":"Windows 10 Version 2004","versions":[">= 10.0.0, < 10.0.19041.1237"]},{"vendor":"Microsoft","product":"Windows 10 Version 20H2","versions":[">= 10.0.0, < 10.0.19042.1237"]},{"vendor":"Microsoft","product":"Windows 10 Version 21H1","versions":[">= 10.0.0, < 10.0.19043.1237"]},{"vendor":"Microsoft","product":"Windows 7","versions":[">= 6.1.0, < 6.1.7601.25712"]},{"vendor":"Microsoft","product":"Windows 7 Service Pack 1","versions":[">= 6.1.0, < 6.1.7601.25712"]}],"description":{"text":"A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.","provenance":"source","from":"CVE.org"},"summary":{"text":"The Windows Print Spooler service in Microsoft's Windows 10 Version 1507 contains a flaw where it improperly performs privileged file operations. An attacker who successfully exploits it can run arbitrary code with SYSTEM privileges, enabling them to install programs, view, change, or delete data, or create accounts with full user rights, provided they have local access and a user performs an interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:13:26Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.30794,"percentile":0.98249,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":null,"cwes":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36958","tags":["vendor-advisory","patch"]},{"url":"https://www.kb.cert.org/vuls/id/131152","tags":[]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36958","tags":["x_refsource_MISC","x_transferred"]}],"techniques":[],"reports":[{"id":"SRC-06a2fa5397da4000010a","title":"ICS/OT CYBERSECURITY","publisher":"hub.dragos.com","url":"https://hub.dragos.com/hubfs/333%20Year%20in%20Review/2021/2021%20ICS%20OT%20Cybersecurity%20Year%20In%20Review%20-%20Dragos%202021.pdf?hsLang=en","date":null,"mentions":[{"quote":"CVE-2021-36958 vulnerabilities to gain access to OT networks from IT networks","start":95893,"end":95970},{"quote":"A fourth vulnerability (CVE-2021-36958)","start":98790,"end":98829}]}],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-23534","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-23534","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2021-08-12","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2021-36958","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":29.0,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.65,"detail":"percentile 0.9825"},{"name":"Named in threat reports","points":3.87,"detail":"1 report"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}