{"id":"CVE-2010-20119","aliases":["EUVD-2010-5321","GHSA-mcx6-3vph-g228"],"status":"published","title":"CommuniCrypt Mail \u003c= 1.16 ANSMTP/AOSMTP ActiveX Control Buffer Overflow","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.","severity":{"version":"4.0","score":8.6,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01686,"percentile":0.77207,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-121"],"published":"2025-08-21T20:09:27Z","modified":"2026-06-16T23:19:46Z","exploits":[{"source":"metasploit","id":"exploit/windows/browser/communicrypt_mail_activex","title":"CommuniCrypt Mail 1.16 SMTP ActiveX Stack Buffer Overflow","type":"exploit","platform":"Windows","date":"2010-05-19","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/windows/browser/communicrypt_mail_activex"}],"products":[{"vendor":"communicrypt software","product":"communicrypt mail"}],"references":[{"url":"https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/communicrypt_mail_activex.rb","tags":["exploit"]},{"url":"https://www.exploit-db.com/exploits/12663","tags":["exploit"]},{"url":"https://www.broadcom.com/support/security-center/attacksignatures/detail?asid=24374","tags":["third-party-advisory"]},{"url":"https://softwarelode.com/4185/details-communicrypt-mail.html","tags":["product"]},{"url":"https://www.fortiguard.com/encyclopedia/ips/23099","tags":["third-party-advisory"]},{"url":"https://www.vulncheck.com/advisories/communicrypt-mail-activex-control-buffer-overflow","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-20119"},{"url":"https://github.com/advisories/GHSA-mcx6-3vph-g228"}],"sources":{"cve":[{"id":"CVE-2010-20119","title":"CommuniCrypt Mail \u003c= 1.16 ANSMTP/AOSMTP ActiveX Control Buffer Overflow","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.","status":"published","published":"2025-08-21T20:09:27.037Z","modified":"2026-05-15T11:13:35.036Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:33:26.302774Z"}],"euvd":[{"id":"EUVD-2010-5321","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.","status":"published","published":"2025-08-21T20:09:27Z","modified":"2026-05-15T11:13:35Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high"}],"updated_at":"2026-11-02T19:04:29.443212Z"}],"ghsa":[{"id":"GHSA-mcx6-3vph-g228","title":"CommuniCrypt Mail versions up to and including 1.16 contains a stack-based buffer overflow...","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.","status":"published","published":"2025-08-21T21:32:06Z","modified":"2025-08-21T21:32:13Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:03:22.719724Z"}],"nvd":[{"id":"CVE-2010-20119","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.","status":"published","published":"2025-08-21T20:15:31.4Z","modified":"2026-06-16T23:19:46.81Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:02:04.957683Z"}]}}