Stack-based buffer overflow in Dawningsoft PowerCHM 5.7 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via an HTML file with a link to a long URL, as demonstrated by a .rar URL.
https://www.exploit-db.com/exploits/8434
https://exchange.xforce.ibmcloud.com/vulnerabilities/49882
Source: Mitre, NVD
Published: 2009-04-21
Updated: 2026-06-16
Base Score: 9.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.05554