CVE-2017-8773: Quickheal Antivirus Pro

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

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 Out of Bounds Write on a Heap Buffer due to improper validation of dwCompressionSize of Microsoft WIM Header WIMHEADER_V1_PACKED. This vulnerability can be exploited to gain Remote Code Execution as well as Privilege Escalation.

Affected products

• Quickheal Antivirus Pro: up to and including 10.1.0.316
• Quickheal Internet Security: up to and including 10.1.0.316
• Quickheal Total Security: up to and including 10.1.0.316

Published 2017-05-04. Last modified 2026-06-17.