{"id":"CVE-2020-25533","aliases":["EUVD-2020-18218","GHSA-p523-j8f3-523j"],"status":"published","title":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to...","description":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0027,"percentile":0.1934,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362"],"published":"2021-01-15T21:55:22Z","modified":"2026-06-17T03:06:53Z","products":[{"vendor":"malwarebytes","product":"malwarebytes"}],"references":[{"url":"https://wojciechregula.blog/post/learn-xpc-exploitation-part-2-say-no-to-the-pid/","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25533"},{"url":"https://github.com/advisories/GHSA-p523-j8f3-523j"}],"sources":{"cve":[{"id":"CVE-2020-25533","description":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.","status":"published","published":"2021-01-15T21:55:22Z","modified":"2024-08-04T15:33:05.631Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2020-18218","description":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.","status":"published","published":"2021-01-15T21:55:22Z","modified":"2024-08-04T15:33:05Z","updated_at":"2026-11-03T03:07:17.764085Z"}],"ghsa":[{"id":"GHSA-p523-j8f3-523j","title":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to...","description":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.","status":"published","published":"2022-05-24T17:39:16Z","modified":"2023-01-29T05:05:04Z","cwes":["CWE-362"],"updated_at":"2026-11-02T14:45:42.123832Z"}],"nvd":[{"id":"CVE-2020-25533","description":"An issue was discovered in Malwarebytes before 4.0 on macOS. A malicious application was able to perform a privileged action within the Malwarebytes launch daemon. The privileged service improperly validated XPC connections by relying on the PID instead of the audit token. An attacker can construct a situation where the same PID is used for running two different programs at different times, by leveraging a race condition during crafted use of posix_spawn.","status":"published","published":"2021-01-15T22:15:13.1Z","modified":"2026-06-17T03:06:53.233Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:06:30.596418Z"}]}}