{"id":"CVE-2023-28218","published":"2023-04-11T19:13:15Z","modified":"2025-01-23T01:04:36Z","title":"Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability","vendor":"Microsoft","product":"Windows 10 Version 1809","tier":"core","eol":null,"affectedVersions":[{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.17763.0, < 10.0.17763.4252"]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","versions":[">= 10.0.0, < 10.0.17763.4252"]},{"vendor":"Microsoft","product":"Windows Server 2019","versions":[">= 10.0.17763.0, < 10.0.17763.4252"]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","versions":[">= 10.0.17763.0, < 10.0.17763.4252"]},{"vendor":"Microsoft","product":"Windows Server 2022","versions":[">= 10.0.20348.0, < 10.0.20348.1668"]},{"vendor":"Microsoft","product":"Windows 10 Version 20H2","versions":[">= 10.0.0, < 10.0.19042.2846"]},{"vendor":"Microsoft","product":"Windows 11 version 21H2","versions":[">= 10.0.0, < 10.0.22000.1817"]},{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[">= 10.0.19043.0, < 10.0.19044.2846"]},{"vendor":"Microsoft","product":"Windows 11 version 22H2","versions":[">= 10.0.22621.0, < 10.0.22621.1555"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[">= 10.0.19045.0, < 10.0.19045.2846"]}],"description":{"text":"Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability","provenance":"source","from":"CVE.org"},"summary":{"text":"The Windows Ancillary Function Driver for WinSock in Microsoft Windows 10 Version 1809 contains an elevation of privilege flaw, classified as a heap-based buffer overflow. An attacker with local access and low-privilege credentials can exploit it, with high attack complexity and no user interaction required, to gain elevated privileges on the affected system.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T22:22:00Z"},"cvss":{"score":7,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.12397,"percentile":0.96206,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2025-03-04","exploitedFirstSeen":"2025-03-04","ransomware":false,"evidence":[{"url":"https://catalyst.prodaft.com/public/report/modus-operandi-of-ruthless-mantis/overview","date":"2025-03-04"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":null,"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28218","tags":["vendor-advisory"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-31926","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-31926","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2023-06-01","earliestUrl":"https://github.com/h1bAna/CVE-2023-28218","repos":[{"name":"h1bAna/CVE-2023-28218","url":"https://github.com/h1bAna/CVE-2023-28218","stars":1,"created":"2023-06-01"}]},"first":{"date":"2023-06-01","source":"PoC-in-GitHub","url":"https://github.com/h1bAna/CVE-2023-28218"},"provenance":"source"},"exploitRefs":[],"flow":[],"timeline":[{"date":"2023-04-11","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2023-28218","provenance":"source"},{"date":"2023-06-01","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/h1bAna/CVE-2023-28218","provenance":"source"},{"date":"2025-03-04","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://catalyst.prodaft.com/public/report/modus-operandi-of-ruthless-mantis/overview","provenance":"source"}],"speed":{"daysToPublicExploit":51,"firstExploitFrom":"PoC-in-GitHub","daysToKev":null},"priority":{"score":64.1,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 607 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.24,"detail":"percentile 0.9621"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":4.9,"detail":"base score 7"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-122"}}