Cybercriminals are leveraging a recently patched critical Adobe Flash Player vulnerability in a massive spam campaign targeting unpatched computers. According to cybersecurity firm Morphisec, cybercriminals are blasting spam messages that urge recipients to click a link to download a Word document. And when a victim opens the document and enables macros, malware attempts to exploit an Adobe Flash Player bug (CVE-2018-4878) patched by Adobe earlier this month. Victims who fall for the ploy could ultimately hand over control of their systems to an attacker, according to researchers.

An Adobe spokesperson said,”the majority of exploits are targeting software installations that are not up-to-date on the latest security updates. We always strongly recommend that users install security updates as soon as they are available.”