{"id":"CVE-2021-29221","aliases":["EUVD-2021-15860","GHSA-gq7g-854q-935r"],"status":"published","title":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3....","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00584,"percentile":0.48402,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-426"],"published":"2021-04-09T13:34:59Z","modified":"2026-10-20T10:54:36Z","products":[{"vendor":"erlang","product":"erlang\\/otp"},{"vendor":"erlang project","product":"erlang/otp"}],"references":[{"url":"https://github.com/erlang/otp/releases/tag/OTP-23.2.3","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29221"},{"url":"https://github.com/advisories/GHSA-gq7g-854q-935r"}],"sources":{"cve":[{"id":"CVE-2021-29221","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","status":"published","published":"2021-04-09T13:34:59Z","modified":"2024-08-03T22:02:51.425Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2021-15860","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","status":"published","published":"2021-04-09T13:34:59Z","modified":"2024-08-03T22:02:51Z","updated_at":"2026-11-03T03:24:45.000012Z"}],"ghsa":[{"id":"GHSA-gq7g-854q-935r","title":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3....","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","status":"published","published":"2022-05-24T17:47:01Z","modified":"2023-01-29T05:05:56Z","cwes":["CWE-426"],"updated_at":"2026-11-02T14:45:54.702484Z"}],"nvd":[{"id":"CVE-2021-29221","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","status":"published","published":"2021-04-09T14:15:12.91Z","modified":"2026-06-17T03:47:25.507Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.2,"vector":"AV:L/AC:H/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-426"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-29221","description":"A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with \"erlsrv.exe\" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.","status":"published","published":"2021-04-09T14:15:12.91Z","modified":"2026-10-20T10:54:36.917074967Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:19.129331Z"}]}}