CVE-2010-20119
Severity CVSS v4.0:
HIGH
Type:
CWE-121
Stack-based Buffer Overflow
Publication date:
21/08/2025
Last modified:
22/08/2025
Description
CommuniCrypt Mail versions up to and including 1.16 contains a stack-based buffer overflow vulnerability in its ANSMTP.dll and AOSMTP.dll ActiveX controls, specifically within the AddAttachments() method. This method fails to properly validate the length of input strings, allowing data to exceed the bounds of a fixed-size stack buffer. When invoked with an overly long string, the control can corrupt adjacent memory structures, including exception handlers, leading to potential control flow disruption.
Impact
Base Score 4.0
8.60
Severity 4.0
HIGH
References to Advisories, Solutions, and Tools
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/communicrypt_mail_activex.rb
- https://softwarelode.com/4185/details-communicrypt-mail.html
- https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=24374
- https://www.exploit-db.com/exploits/12663
- https://www.fortiguard.com/encyclopedia/ips/23099
- https://www.vulncheck.com/advisories/communicrypt-mail-activex-control-buffer-overflow