Last week, Talos discovered multiple vulnerabilities in 7-Zip, a popular, open source file archiver. The vulnerabilities are particularly severe as many products, including antivirus software, implement 7-Zip in their software. When vulnerabilities are found, it is the responsibility of software owners to patch them. However, these patches are useless, unless users update their software.

Avast is not affected by these vulnerabilities, but if you are a non-Avast user we recommend you update your antivirus software, if you haven’t done so already.