CVE-2010-20119 Details
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.
A stack-based buffer overflow vulnerability has been identified in CommuniCrypt Mail versions through 1.16. The issue resides in the ANSMTP.dll and AOSMTP.dll ActiveX controls, specifically within the AddAttachments() method. This method does not properly validate the length of input strings, allowing data to overflow a fixed-size stack buffer. Exploitation of this vulnerability can corrupt adjacent memory structures, including exception handlers, potentially leading to arbitrary code execution with SYSTEM-level privileges.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 21, 2025CISA-ADP
Assessed Aug 22, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| CommuniCrypt Mail | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 16, 2026 | CVE Modified | [email protected] |
| Jun 16, 2026 | CVE Modified | CISA-ADP |
| Aug 21, 2025 | New CVE Received | [email protected] |