[walrus01]

There's been buffer overflows/RCE exploits in all sorts of software that can parse images since, well, forever. I remember more than 20 years ago seeing a notice about the embedded Internet Explorer rendering engine in Microsoft Outlook Express having an RCE zero day which could be exploited by simply loading an image in the body of an email.

Rich multimedia parsing display systems in messaging apps are a very tempting attack surface for entities such as NSO.

[baybal2]

Why a messenger app needs a picture viewer?

[saagarjha]

Because people send each other pictures?

[alasdair_]

> Why a messenger app needs a picture viewer?

A picture is worth a thousand words.