"WhatsApp is constantly working to improve the security of our service. We make public, reports on potential issues we have fixed consistent with industry-best practices. In this instance, there is no reason to believe users were impacted," a company spokesperson said in a statement shared with IANS.
The micro-blogging platform has already issued a security update on this bug.
Facebook had earlier issued an advisory, saying "a stack-based buffer overflow could be triggered in WhatsApp by sending a specially-crafted MP4 file to a WhatsApp user."
"The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE."
The vulnerability is classified as "critical" severity that affected an unknown code block of the component MP4 File Handler in WhatsApp.
The Pegasus-NSO Group issue snowballed into a political one, with the Indian government directing WhatsApp to submit a reply over the matter.
The government also denied either purchasing or planning to purchase the infamous software in question.
The new vulnerability is found in Android versions prior to 2.19.274; iOS versions prior to 2.19.100; Enterprise Client versions prior to 2.25.3; Business for Android versions prior to 2.19.104; Business for iOS versions prior to 2.19.100; and Windows Phone versions before and including 2.18.368.
The RCE vulnerability may allow hackers to perform the attack remotely without any sort of authentication.