Suppose researchers looking at 7-zip were lazier getting their CVEs than those looking at Winrar, Winzip, Info-zip, zlib, bzip2, and other commonly used compression packages. ;-)

https://www.cvedetails.com/vulnerability-list/vendor_id-787/... https://www.cvedetails.com/vulnerability-list/vendor_id-787/... https://www.cvedetails.com/vulnerability-list/vendor_id-72/p... https://www.cvedetails.com/vulnerability-list/vendor_id-816/... https://www.cvedetails.com/vulnerability-list/vendor_id-1198...