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CVE-2010-20119
CommuniCrypt Mail <= 1.16 ANSMTP/AOSMTP ActiveX Control Buffer Overflow
High8.6EPSS 1.7%
- Published
- Updated
- Reserved
- Assigned by
- VulnCheck
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulnCheckCNA (assigner) | 4.0 | High8.6 | 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 |
| NVDNVD · Deferred | 4.0 | High8.6 | 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 |
- EPSS (exploitation in 30 days)
- 1.7% · top 23% of all CVEs (4 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Weakness
Affected products
CommuniCrypt Software · CommuniCrypt Mail
- affected ≤ 1.16
References (6)
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/communicrypt_mail_activex.rb (opens in a new tab)exploit
- https://www.exploit-db.com/exploits/12663 (opens in a new tab)exploit
- https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=24374 (opens in a new tab)third-party-advisory
- https://softwarelode.com/4185/details-communicrypt-mail.html (opens in a new tab)product
- https://www.fortiguard.com/encyclopedia/ips/23099 (opens in a new tab)third-party-advisory
- https://www.vulncheck.com/advisories/communicrypt-mail-activex-control-buffer-overflow (opens in a new tab)third-party-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2010-20119)Record last updated .