Kmail 1.9.1 on KDE 3.5.2, with "Prefer HTML to Plain Text" enabled, allows remote attackers to cause a denial of service (crash) via an HTML e-mail with certain table and frameset tags that trigger a segmentation fault, possibly involving invalid free or delete operations.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.083
EPSS Ranking 91.7%