Microsoft Outlook 2000, 2002, and 2003 allows user-assisted remote attackers to cause a denial of service (memory exhaustion and interrupted mail recovery) via malformed e-mail header information, possibly related to (1) long subject lines or (2) large numbers of recipients in To or CC headers.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.514
EPSS Ranking 97.7%