{"id":"CVE-2020-27949","aliases":["EUVD-2020-20442","GHSA-674m-959c-gvpx"],"status":"published","title":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is...","description":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00977,"percentile":0.6242,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2021-04-02T17:39:58Z","modified":"2026-06-17T03:09:55Z","exploits":[{"source":"pocgithub","id":"seemoo-lab/dtrace-memaccess_cve-2020-27949","title":"seemoo-lab/dtrace-memaccess_cve-2020-27949","date":"2020-12-14","url":"https://github.com/seemoo-lab/dtrace-memaccess_cve-2020-27949"}],"products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT212011","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27949"},{"url":"https://github.com/advisories/GHSA-674m-959c-gvpx"}],"sources":{"cve":[{"id":"CVE-2020-27949","description":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.","status":"published","published":"2021-04-02T17:39:58Z","modified":"2024-08-04T16:25:44.113Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-20442","description":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.","status":"published","published":"2021-04-02T17:39:58Z","modified":"2024-08-04T16:25:44Z","updated_at":"2026-11-03T03:07:10.69897Z"}],"ghsa":[{"id":"GHSA-674m-959c-gvpx","title":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is...","description":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.","status":"published","published":"2022-05-24T17:46:11Z","modified":"2023-01-29T05:06:13Z","updated_at":"2026-11-02T14:45:58.601163Z"}],"nvd":[{"id":"CVE-2020-27949","description":"This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.","status":"published","published":"2021-04-02T18:15:16.92Z","modified":"2026-06-17T03:09:55.66Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:37.687844Z"}]}}