{"id":"CVE-2020-1523","aliases":["EUVD-2020-12397","GHSA-6vqx-2465-vx69"],"status":"published","title":"Microsoft SharePoint Server Tampering Vulnerability","description":"\u003cp\u003eA tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.\u003c/p\u003e","severity":{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02217,"percentile":0.82774,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2020-09-11T17:09:22Z","modified":"2026-06-17T03:01:38Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint server 2019"},{"vendor":"microsoft","product":"sharepoint_server"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1523","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1523"},{"url":"https://github.com/advisories/GHSA-6vqx-2465-vx69"}],"sources":{"cve":[{"id":"CVE-2020-1523","title":"Microsoft SharePoint Server Tampering Vulnerability","description":"\u003cp\u003eA tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.\u003c/p\u003e","status":"published","published":"2020-09-11T17:09:22Z","modified":"2024-11-18T16:17:20.044Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12397","description":"\u003cp\u003eA tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.\u003c/p\u003e","status":"published","published":"2020-09-11T17:09:22Z","modified":"2024-11-18T16:17:20Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:57.054288Z"}],"ghsa":[{"id":"GHSA-6vqx-2465-vx69","title":"A tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle...","description":"A tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data, aka 'Microsoft SharePoint Server Tampering Vulnerability'. This CVE ID is unique from CVE-2020-1440.","status":"published","published":"2022-05-24T17:28:04Z","modified":"2024-01-09T05:05:03Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T14:55:21.919096Z"}],"nvd":[{"id":"CVE-2020-1523","description":"\u003cp\u003eA tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.\u003c/p\u003e","status":"published","published":"2020-09-11T17:15:21.293Z","modified":"2026-06-17T03:01:38.713Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}