CVE-2009-4479: LDAP3A.exe in MailSite 8.0.4 allows remote attackers to cause a denial of service (heap memory corruption a...

Security readout for executives and security teams

This CVE tracks a reported denial-of-service flaw in MailSite 8.0.4's LDAP3A.exe component. A remote attacker may be able to crash the daemon through heap memory corruption. The public record explicitly says the disclosure lacked actionable details, so urgency depends on whether this legacy MailSite component is still deployed and reachable. Exposure appears limited to environments still running MailSite 8.0.4, especially where the LDAP3A.exe service is reachable by untrusted networks. The source bundle does not identify other affected versions or products. Treat this as a legacy exposure question rather than a current mass-exploitation emergency. Prioritize inventory and isolation if MailSite 8.0.4 is still business-critical or internet-reachable. Mitigation focus: Confirm whether MailSite 8.0.4 and LDAP3A.exe are present in production or legacy environments.; Check official vendor or support guidance before assuming any patch or workaround exists.; Reduce exposure of the LDAP component where business requirements allow..

Prepared

Jun 28, 2026, 09:59 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.