Buffer overflow in Yahoo! Messenger 8.1 allows user-assisted remote authenticated users, who are listed in an address book, to execute arbitrary code via unspecified vectors, aka ZD-00000005. NOTE: this information is based upon a vague advisory by a vulnerability information sales organization that does not coordinate with vendors or release actionable advisories. A CVE has been assigned for tracking purposes, but duplicates with other CVEs are difficult to determine.
Conclusion & alert: CVE-2007-3638 is rated High Exploit Risk (70.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 4.52%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 30314 | exploit_db | edb | 2007-07-16 | Exploit-DB ↗ |
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 | 2026-02-26 | 4.09% | 4.52% | +0.43% |
| 2 | 2025-08-04 | 3.76% | 4.09% | +0.33% |
| 3 | 2025-04-28 | — | 3.76% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.0 | 2.0 | MEDIUM |
|
6.8 | 6.4 | [email protected] |