Heap-based buffer overflow in the xjpegls.dll (aka JLS, JPEG-LS, or JPEG lossless) format plugin in XnView 1.99 and 1.99.1 allows remote attackers to execute arbitrary code via a crafted JLS image file.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.483
EPSS Ranking 97.6%