{"id":"CVE-2021-22043","aliases":["EUVD-2021-9212","GHSA-27hx-pvj5-2hqg"],"status":"published","title":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way...","description":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01052,"percentile":0.64755,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2022-02-16T16:37:55Z","modified":"2026-06-17T03:36:36Z","products":[{"vendor":"vmware","product":"esxi"},{"vendor":"vmware","product":"fusion"}],"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2022-0004.html","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22043"},{"url":"https://github.com/advisories/GHSA-27hx-pvj5-2hqg"}],"sources":{"cve":[{"id":"CVE-2021-22043","description":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.","status":"published","published":"2022-02-16T16:37:55Z","modified":"2024-08-03T18:30:24.011Z","updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-9212","description":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.","status":"published","published":"2022-02-16T16:37:55Z","modified":"2024-08-03T18:30:24Z","updated_at":"2026-11-03T03:25:03.638882Z"}],"ghsa":[{"id":"GHSA-27hx-pvj5-2hqg","title":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way...","description":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.","status":"published","published":"2022-02-17T00:00:32Z","modified":"2023-02-03T05:06:19Z","cwes":["CWE-367"],"updated_at":"2026-11-02T14:53:52.731364Z"}],"nvd":[{"id":"CVE-2021-22043","description":"VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.","status":"published","published":"2022-02-16T17:15:10.593Z","modified":"2026-06-17T03:36:36.003Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:07:04.6896Z"}]}}