unrar.c in libclamav in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows remote attackers to cause a denial of service (core dump) via a crafted RAR file with a modified vm_codesize value, which triggers a heap-based buffer overflow.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.027
EPSS Ranking 85.1%