Summary
generated automatically from NVD dataThe Internet Mail Connector (IMC) in Microsoft Exchange Server 5.5 contains a buffer overflow (CWE-120) in the way it builds its hello response. A remote attacker can trigger it with an EHLO request sent from a system whose name, obtained through a reverse DNS lookup, is very long. Successful exploitation could allow arbitrary code execution, and the flaw is rated 7.5 (HIGH) under CVSS v2.0.
NVD description
Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response.
EPSS · FIRST.org
20.3%probability of exploitation in the next 30 days
Higher than 97% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-29, recomputed daily by FIRST.org.
CVSS v2.0 Score
Information
- Published
- 12 août 2002
- Updated
- 16 juin 2026
- Status
- Modified
- Source
- cve@mitre.org
Affected products
Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.
Weaknesses (CWE)
References (10)
- http://www.securityfocus.com/bid/5306Third Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/5306Third Party AdvisoryVDB Entry
Similar CVEs
Other vulnerabilities of type CWE-120
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