CVE-2010-20119
CVE-2010-20119 is a high-severity vulnerability with a CVSS 4.0 base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.
Key facts
- Severity: High (CVSS 4.0 base score 8.6)
- EPSS exploit prediction: 1% (60th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2010-5321
- Weakness: CWE-121
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2010-20119?
- CVE-2010-20119 has a CVSS 4.0 base score of 8.6, rated high severity.
- Is CVE-2010-20119 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2010-20119?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2010-20119 have an EU (EUVD) identifier?
- Yes. CVE-2010-20119 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2010-5321.
- When was CVE-2010-20119 published?
- CVE-2010-20119 was published on 2025-08-21 and last updated on 2026-06-16.
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
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