{"cve":"CVE-2018-8159","nvd":{"published":"2018-05-09T19:29:02.497","modified":"2026-06-17T02:04:22.280","status":"Modified","description":"An elevation of privilege vulnerability exists when Microsoft Exchange Outlook Web Access (OWA) fails to properly handle web requests, aka \"Microsoft Exchange Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["http://www.securityfocus.com/bid/104056","http://www.securitytracker.com/id/1040850","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8159","http://www.securityfocus.com/bid/104056","http://www.securitytracker.com/id/1040850"],"products":["microsoft:exchange_server"],"source":"nvd","synced_at":"2026-10-19T20:50:40.212176939+00:00"},"epss":{"cve":"CVE-2018-8159","score":0.03512,"percentile":0.89205,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}