CVE-2010-20119

Aug. 21, 2025, 8:15 p.m.

8.6
High

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.

Product(s) Impacted

Vendor Product Versions
Communicrypt
  • Mail
  • Ansmtp
  • Aosmtp
  • *
  • *
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-121
Stack-based Buffer Overflow
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a communicrypt mail / / / / / / / /
a communicrypt ansmtp / / / / / / / /
a communicrypt aosmtp / / / / / / / /

References

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

Tags

CWE-121
disclosure@vulncheck.com
2025-08-21
CVE-2010-20119

CVSS Score

8.6 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: ACTIVE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Aug. 21, 2025, 8:15 p.m.
Last Modified: Aug. 21, 2025, 8:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

disclosure@vulncheck.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.