CVE-2019-18894

HighCVSS 7.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-78

Affected software

No affected versions have been published.

Timeline

Published
Jan 13, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2019

CVE-2019-188957.8Scanguard through 2019-11-12 on Windows has Insecure Permissions for the installation directory, leading to privilege escalation via a TrojaCVE-2019-188977.8A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of salt of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise SeCVE-2019-188987.8UNIX Symbolic Link (Symlink) Following vulnerability in the trousers package of SUSE Linux Enterprise Server 15 SP1; openSUSE Factory alloweCVE-2019-188995.5The apt-cacher-ng package of openSUSE Leap 15.1 runs operations in user owned directory /run/apt-cacher-ng with root privileges. This can alCVE-2019-18906.5A vulnerability in the fabric infrastructure VLAN connection establishment of the Cisco Nexus 9000 Series Application Centric InfrastructureCVE-2019-189003.3: Incorrect Default Permissions vulnerability in libzypp of SUSE CaaS Platform 3.0, SUSE Linux Enterprise Server 12, SUSE Linux Enterprise SCVE-2019-189015.5A UNIX Symbolic Link (Symlink) Following vulnerability in the mysql-systemd-helper of the mariadb packaging of SUSE Linux Enterprise Server CVE-2019-189029.8A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory alCVE-2019-189039.8A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory alCVE-2019-189047.5A Uncontrolled Resource Consumption vulnerability in rmt of SUSE Linux Enterprise High Performance Computing 15-ESPOS, SUSE Linux EnterpriseCVE-2019-189055.9A Insufficient Verification of Data Authenticity vulnerability in autoyast2 of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise ServerCVE-2019-189069.8A Improper Authentication vulnerability in cryptctl of SUSE Linux Enterprise Server for SAP 12-SP5, SUSE Manager Server 4.0 allows attackers
CVE-2019-18894: High severity, CVSS 7.8 | Vulnix