Four major browsers impacted by a single zero-day vulnerability


Google Chrome, Microsoft Edge, Mozilla Firefox and Apple’s Safari browser have all been impacted by a single zero-day vulnerability, it has emerged. The flaw, tracked as CVE-2023-4863, is caused by a heap buffer overflow in the WebP code library. Once exploited it can lead to system crashes and arbitrary code execution, where hackers can gain control over an infected device.

CVE-2023-4863 was first identified by researchers at The Citizen Lab, a research arm of the University of Toronto. The institution subsequently informed Google and Apple of the vulnerability’s existence. Both companies have now released patches. They were joined by Mozilla, which released its own advisory on CVE-2023-4863 yesterday and updates for several versions of its Firefox browser and Thunderbird email client, and Microsoft.

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