{"id":"CVE-2019-18894","aliases":["EUVD-2019-8576","GHSA-8g22-628c-4vg2"],"status":"published","title":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local...","description":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01776,"percentile":0.78356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2020-01-13T16:13:02Z","modified":"2026-06-17T02:25:32Z","products":[{"vendor":"avast","product":"premium_security"}],"references":[{"url":"https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18894"},{"url":"https://github.com/advisories/GHSA-8g22-628c-4vg2"}],"sources":{"cve":[{"id":"CVE-2019-18894","description":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.","status":"published","published":"2020-01-13T16:13:02Z","modified":"2024-08-05T02:02:39.871Z","updated_at":"2026-11-02T14:32:23.485011Z"}],"euvd":[{"id":"EUVD-2019-8576","description":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.","status":"published","published":"2020-01-13T16:13:02Z","modified":"2024-08-05T02:02:39Z","updated_at":"2026-11-03T02:40:27.303586Z"}],"ghsa":[{"id":"GHSA-8g22-628c-4vg2","title":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local...","description":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.","status":"published","published":"2022-05-24T17:06:05Z","modified":"2023-01-29T05:01:00Z","updated_at":"2026-11-02T14:44:43.065987Z"}],"nvd":[{"id":"CVE-2019-18894","description":"In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to the local web server run by Avast Antivirus on port 27275 to support Bank Mode functionality. A flaw in the processing of a command allows execution of arbitrary OS commands with the privileges of the currently logged in user. This allows for example attackers who compromised a browser extension to escape from the browser sandbox.","status":"published","published":"2020-01-13T17:15:11.633Z","modified":"2026-06-17T02:25:32.407Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:05:42.416368Z"}]}}