A Cross Site Scripting (XSS) issue exists in Avast AntiVirus (Free, Internet Security, and Premiere Edition) 19.3.2369 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.

An issue was discovered in Avast antivirus before 19.8 and AVG antivirus before 19.8. A DLL Preloading vulnerability allows an attacker to implant %WINDIR%\system32\wbemcomn.dll, which is loaded into a protected-light process (PPL) and might bypass some of the self-defense mechanisms. This affects all components that use WMI, e.g., AVGSvc.exe 19.6.4546.0 and TuneupSmartScan.dll 19.1.884.0.

LavaLite through 5.7 has XSS via a crafted account name that is mishandled on the Manage Clients screen.

A Cross-Site Scripting (XSS) vulnerability in the Web UI of Avaya Aura Conferencing may allow code execution and potentially disclose sensitive information. Affected versions of Avaya Aura Conferencing include all 8.x versions prior to 8.0 SP14 (8.0.14). Prior versions not listed were not evaluated.

In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.

A SQL injection vulnerability in the reporting component of Avaya Control Manager could allow an unauthenticated attacker to execute arbitrary SQL commands and retrieve sensitive data related to other users on the system. Affected versions of Avaya Control Manager include 7.x and 8.0.x versions prior to 8.0.4.0. Unsupported versions not listed here were not evaluated.

A Local Privilege Escalation issue was discovered in Avast Secure Browser 76.0.1659.101. The vulnerability is due to an insecure ACL set by the AvastBrowserUpdate.exe (which is running as NT AUTHORITY\SYSTEM) when AvastSecureBrowser.exe checks for new updates. When the update check is triggered, the elevated process cleans the ACL of the Update.ini file in %PROGRAMDATA%\Avast Software\Browser\Update\ and sets all privileges to group Everyone. Because any low-privileged user can create, delete, or modify the Update.ini file stored in this location, an attacker with low privileges can create a hard link named Update.ini in this folder, and make it point to a file writable by NT AUTHORITY\SYSTEM. Once AvastBrowserUpdate.exe is triggered by the update check functionality, the DACL is set to a misconfigured value on the crafted Update.ini and, consequently, to the target file that was previously not writable by the low-privileged attacker.

A SQL injection vulnerability in the WebUI component of IP Office Contact Center could allow an authenticated attacker to retrieve or alter sensitive data related to other users on the system. Affected versions of IP Office Contact Center include all 9.x and 10.x versions prior to 10.1.2.2.2-11201.1908. Unsupported versions not listed here were not evaluated.

Avast Free Antivirus prior to 19.1.2360 stores user credentials in memory upon login, which allows local users to obtain sensitive information by dumping AvastUI.exe application memory and parsing the data.

Avaya one-X Communicator uses weak cryptographic algorithms in the client authentication component that could allow a local attacker to decrypt sensitive information. Affected versions include all 6.2.x versions prior to 6.2 SP13.