Oh yes. Adobe Reader has a reputatation for ongoing vulnerabilities. (Count: 1901 at time of comment)

Part of it was Adobe's shitty security culture for many years. They've done a good job search-washing this away, but many of us remember their previous CEO lashing out at security researchers - as if Adobe being a Cybersecurity laughing stock was some kind of conspiracy.

Part of it is simply that becoming the final word in portable documents required a lot of shenanigans.

For some context, and contrast:

• Microsoft Word Vulns (368 at time of comment)
• Emacs Vulns (26)
• Firefox Vulns (over 3,000)

Edit: In fairness, Adobe Reader is (whether it should be or not) also closer to Firefox in functionality, as well.