Buffer overflow in Communicrypt Software Mail
CVE-2010-20119
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.
Vulnerability class: Buffer Overflow
EPSS: 0.011 (63.1th percentile) — read the EPSS interpretation.
Affected products
- Communicrypt Software Mail — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2010-20119?
- CVE-2010-20119 is a vulnerability in Communicrypt Software Mail, classified under Stack-based Buffer Overflow. Published 2025-08-21.
- Is CVE-2010-20119 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.