MSN Messenger Service 3.6, and possibly other versions, uses weak authentication when exchanging messages between clients, which allows remote attackers to spoof messages from other users.
Conclusion & alert: CVE-2002-0472 is rated Moderate Risk (53.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 15.19%, 94th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-04-23 | 14.53% | 15.19% | +0.66% |
| 2 | 2025-03-30 | 19.92% | 14.53% | -5.39% |
| 3 | 2025-03-29 | — | 19.92% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | msn_messenger | 3.6 | cpe:2.3:a:microsoft:msn_messenger:3.6:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.encode-sec.com/esp0202.pdf | |
| http://www.iss.net/security_center/static/8582.php | Vendor Advisory |
| http://www.securityfocus.com/archive/1/262906 | Vendor Advisory |
| http://www.securityfocus.com/bid/4316 | Vendor Advisory |