Windows: Critical flaw seriously endangers Office applications

As its number of users plummets into the abyss, Internet Explorer continues to be the target of hackers. Microsoft indeed warns them that a zero-day flaw, allowing remote code execution, has been discovered by its teams. If you think yourself untouchable, know that the vulnerability also impacts Office applications.

Internet Explorer is on the verge of being forgotten. Since Windows 10, the historical browser is replaced by Edge, its much more popular successor. In a few months, Microsoft will abandon it for good when Windows 11 launches. It is therefore a whole page of computer history that is turning for many of us. But if we don’t take too many risks in saying that the majority of users have long left aside the dinosaur of browsers, the latter is always installed on a number of PCs, thus leaving the door open to pirates.

Microsoft is well aware of this and continues to monitor the software until its final extinction. A very rich idea, since the publisher revealed to have recently discovered a zero-day flaw in the browser. This is found in the MSHTML rendering engine, also called Trident, which allows it to display websites. The vulnerability further allows hackers to execute code remotely, potentially to install malware or extract sensitive data from the infected machine.

On the same topic: Windows 10 – a flaw allows you to hack your PC using a simple Razer mouse

Internet Explorer security vulnerability affects all Office users

“Whatever” you will say (probably), “I haven’t used Internet Explorer for a long time”. Nevertheless, you would be mistaken. Indeed, the browser is not the only one to use Trident. Office applications also use itt. In other words, a malicious individual could introduce an ActiveX control within a Word, Excel or PowerPoint file, capable of to infect the PC of anyone would have the misfortune to open it.

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Better then install the latest update for Microsoft Defender to protect against these potential attacks. If, nostalgic as you are, you still use Internet Explorer, be aware that Office 365 opens all documents in protected mode, thus preventing you from being infected with malware. Despite everything, we advise you disable ActiveX controls from the registry. It is not yet known whether the Trident engine will be kept after the death of the navigator.

Source: Microsoft

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