A DLL hijacking vulnerability in the installed for Quick Heal Total Security prior to 12.1.1.27 allows a local attacker to achieve privilege escalation, leading to execution of arbitrary code, via the installer not restricting the search path for required DLLs and then not verifying the signature of the DLLs it tries to load.

Time of Check - Time of Use (TOCTOU) vulnerability in Quick Heal Total Security prior to 12.1.1.27 allows a local attacker to achieve privilege escalation, potentially leading to deletion of system files. This is achieved through exploiting the time between detecting a file as malicious and when the action of quarantining or cleaning is performed, and using the time to replace the malicious file by a symlink.

Quick Heal Total Security before version 19.0 transmits quarantine and sysinfo files via clear text.

Quick Heal Total Security before 19.0 allows attackers with local admin rights to obtain access to files in the File Vault via a brute-force attack on the password.

Quick Heal Total Security before 19.0 allows attackers with local admin rights to modify sensitive anti virus settings via a brute-attack on the settings password.

The Quick Heal AV parsing engine (November 2019) allows virus-detection bypass via a crafted GPFLAG in a ZIP archive. This affects Total Security, Home Security, Total Security Multi-Device, Internet Security, Total Security for Mac, AntiVirus Pro, AntiVirus for Server, and Total Security for Android.

Quick Heal Total Security 64 bit 17.00 (QHTS64.exe), (QHTSFT64.exe) - Version 10.0.1.38; Quick Heal Total Security 32 bit 17.00 (QHTS32.exe), (QHTSFT32.exe) - Version 10.0.1.38; Quick Heal Internet Security 64 bit 17.00 (QHIS64.exe), (QHISFT64.exe) - Version 10.0.0.37; Quick Heal Internet Security 32 bit 17.00 (QHIS32.exe), (QHISFT32.exe) - Version 10.0.0.37; Quick Heal AntiVirus Pro 64 bit 17.00 (QHAV64.exe), (QHAVFT64.exe) - Version 10.0.0.37; and Quick Heal AntiVirus Pro 32 bit 17.00 (QHAV32.exe), (QHAVFT32.exe) - Version 10.0.0.37 allow DLL Hijacking because of Insecure Library Loading.

Quick Heal Internet Security 10.1.0.316, Quick Heal Total Security 10.1.0.316, and Quick Heal AntiVirus Pro 10.1.0.316 have approximately 165 PE files in the default installation that do not use ASLR/DEP protection mechanisms that provide sufficient defense against directed attacks against the product.

Quick Heal Internet Security 10.1.0.316, Quick Heal Total Security 10.1.0.316, and Quick Heal AntiVirus Pro 10.1.0.316 are vulnerable to Memory Corruption while parsing a malformed Mach-O file.

Quick Heal Internet Security 10.1.0.316, Quick Heal Total Security 10.1.0.316, and Quick Heal AntiVirus Pro 10.1.0.316 are vulnerable to Memory Corruption while parsing a malformed Mach-O file.