{"id":"CVE-2026-26143","aliases":["BIT-powershell-2026-26143","EUVD-2026-22369","GHSA-hrfw-jjgv-mg38"],"status":"published","title":"Microsoft PowerShell Security Feature Bypass Vulnerability","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00557,"percentile":0.46865,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2026-04-14T16:57:53Z","modified":"2026-10-28T02:30:31Z","fixes":[{"ecosystem":"Bitnami","package":"powershell","fixed_in":["7.4.14","7.5.5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"powershell","ranges":[{"type":"SEMVER","events":[{"introduced":"7.4.0"},{"fixed":"7.4.14"},{"introduced":"7.5.0"},{"fixed":"7.5.5"}]}]}],"products":[{"vendor":"microsoft","product":"powershell"},{"vendor":"microsoft","product":"powershell 7.4"},{"vendor":"microsoft","product":"powershell 7.5"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26143","tags":["vendor-advisory","patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26143","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hrfw-jjgv-mg38"}],"sources":{"cve":[{"id":"CVE-2026-26143","title":"Microsoft PowerShell Security Feature Bypass Vulnerability","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T16:57:53.686Z","modified":"2026-10-15T15:53:06.699Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-22369","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T16:57:53Z","modified":"2026-10-15T15:53:06Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T17:00:12.978606Z"}],"ghsa":[{"id":"GHSA-hrfw-jjgv-mg38","title":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a...","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T18:30:37Z","modified":"2026-04-14T18:30:42Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:07:29.002055Z"}],"nvd":[{"id":"CVE-2026-26143","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T18:16:45.62Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:14.748836Z"}],"osv":[{"id":"CVE-2026-26143","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-14T18:16:45.62Z","modified":"2026-10-28T02:30:31.257240723Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:59.80315Z"},{"id":"BIT-powershell-2026-26143","title":"Microsoft PowerShell Security Feature Bypass Vulnerability","description":"Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.","status":"published","published":"2026-04-28T08:49:49.213Z","modified":"2026-09-08T08:48:18.656370032Z","updated_at":"2026-11-02T15:28:34.724063Z"}]}}