{"id":"CVE-2021-47701","aliases":["EUVD-2021-34738","GHSA-3rfh-phff-7g8v"],"status":"published","title":"OpenBMCS User Management Privilege Escalation","description":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script.  Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00515,"percentile":0.44159,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2025-12-09T20:35:24Z","modified":"2026-06-17T04:18:19Z","products":[{"vendor":"open bmcs","product":"openbmcs"},{"vendor":"openbmcs","product":"openbmcs"}],"references":[{"url":"https://www.exploit-db.com/exploits/50669","tags":["exploit","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5693.php","tags":["third-party-advisory","Exploit","Third Party Advisory"]},{"url":"https://www.vulncheck.com/advisories/openbmcs-user-management-privilege-escalation","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47701"},{"url":"https://github.com/advisories/GHSA-3rfh-phff-7g8v"}],"sources":{"cve":[{"id":"CVE-2021-47701","title":"OpenBMCS User Management Privilege Escalation","description":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script.  Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.","status":"published","published":"2025-12-09T20:35:24.273Z","modified":"2026-04-07T14:05:28.535Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2021-34738","description":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script.  Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.","status":"published","published":"2025-12-09T20:35:24Z","modified":"2026-04-07T14:05:28Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:25:13.718727Z"}],"ghsa":[{"id":"GHSA-3rfh-phff-7g8v","title":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by...","description":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script.  Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.","status":"published","published":"2025-12-09T21:31:48Z","modified":"2025-12-17T15:35:55Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:05:14.584234Z"}],"nvd":[{"id":"CVE-2021-47701","description":"OpenBMCS 2.4 allows an attacker to escalate privileges from a read user to an admin user by manipulating permissions and exploiting a vulnerability in the update_user_permissions.php script.  Attackers can submit a malicious HTTP POST request to PHP scripts in '/plugins/useradmin/' directory.","status":"published","published":"2025-12-09T21:15:47.86Z","modified":"2026-06-17T04:18:19.25Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}