{"cve":"CVE-2018-8238","nvd":{"published":"2018-07-11T00:29:00.647","modified":"2026-06-17T02:04:29.330","status":"Modified","description":"A security feature bypass vulnerability exists when Skype for Business or Lync do not properly parse UNC path links shared via messages, aka \"Skype for Business and Lync Security Feature Bypass Vulnerability.\" This affects Skype, Microsoft Lync.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["http://www.securityfocus.com/bid/104619","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8238","http://www.securityfocus.com/bid/104619","https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8238"],"products":["microsoft:lync","microsoft:skype_for_business"],"source":"nvd","synced_at":"2026-10-19T20:51:47.459859389+00:00"},"epss":{"cve":"CVE-2018-8238","score":0.05988,"percentile":0.93313,"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."]}