Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 on Windows XP SP3, when directory-based Basic Authentication is enabled, allows remote attackers to bypass intended access restrictions and execute ASP files via a crafted request, aka "Directory Authentication Bypass Vulnerability."
Conclusion & alert: CVE-2010-2731 is rated High Exploit Risk (79.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 66.78%, 98th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.66% over the last day, indicating growing attacker interest. 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 |
|---|---|---|---|---|
| 14179 | exploit_db | edb | 2010-07-02 | 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 | 2025-12-28 | 64.12% | 66.78% | +2.66% |
| 2 | 2025-12-27 | 66.78% | 64.12% | -2.66% |
| 3 | 2025-10-28 | — | 66.78% | — |
Full EPSS history (18 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_xp | - | — |