Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Free Anti-Virus, Kaspersky Small Office Security, Kaspersky Security Cloud up to 2020, the web protection component was vulnerable to remote disclosure of various information about the user's system (like Windows version and version of the product, host unique ID). Information Disclosure.

Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Free Anti-Virus, Kaspersky Small Office Security, Kaspersky Security Cloud up to 2020, the web protection component allowed an attacker remotely disable various anti-virus protection features. DoS, Bypass.

Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Free Anti-Virus, Kaspersky Small Office Security, Kaspersky Security Cloud up to 2020, the web protection component allowed an attacker remotely disable such product's security features as private browsing and anti-banner. Bypass.

Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Free Anti-Virus, Kaspersky Small Office Security, Kaspersky Security Cloud up to 2020, the web protection component did not adequately inform the user about the threat of redirecting to an untrusted site. Bypass.

A Privilege Escalation vulnerability in the Microsoft Windows client in McAfee Total Protection 16.0.R22 and earlier allows administrators to execute arbitrary code via carefully placing malicious files in specific locations protected by administrator permission.

A Cross Site Scripting (XSS) issue exists in AVG AntiVirus (Internet Security Edition) 19.3.3084 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.

The malware scan function in Total Defense Anti-virus 11.5.2.28 is vulnerable to a TOCTOU bug; consequently, symbolic link attacks allow privileged files to be deleted.

The quarantine restoration function in Total Defense Anti-virus 11.5.2.28 is vulnerable to symbolic link attacks, allowing files to be written to privileged directories.

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.

In Total Defense Anti-virus 9.0.0.773, insecure access control for the directory %PROGRAMDATA%\TotalDefense\Consumer\ISS\9\ used by ccschedulersvc.exe allows local attackers to hijack dotnetproxy.exe, which leads to privilege escalation when the ccSchedulerSVC service runs the executable.