Cross-site scripting (XSS) vulnerability in _layouts/help.aspx in Microsoft SharePoint Server 2007 12.0.0.6421 and possibly earlier, and SharePoint Services 3.0 SP1 and SP2, versions, allows remote attackers to inject arbitrary web script or HTML via the cid0 parameter.
Conclusion & alert: CVE-2010-0817 is rated High Exploit Risk (67.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 55.32%, 98th percentile). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.03% 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 |
|---|---|---|---|---|
| 12450 | exploit_db | edb | 2010-04-29 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | 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 | 2026-03-04 | 54.29% | 55.32% | +1.03% |
| 2 | 2026-03-01 | 55.32% | 54.29% | -1.03% |
| 3 | 2026-02-04 | — | 55.32% | — |
Full EPSS history (54 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | sharepoint_server | 2007 | cpe:2.3:a:microsoft:sharepoint_server:2007:*:*:*:*:*:*:* |
| microsoft | sharepoint_services | 3.0 | cpe:2.3:a:microsoft:sharepoint_services:3.0:sp1:x32:*:*:*:*:* |
| microsoft | sharepoint_services | 3.0 | cpe:2.3:a:microsoft:sharepoint_services:3.0:sp1:x64:*:*:*:*:* |
| microsoft | sharepoint_services | 3.0 | cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x32:*:*:*:*:* |
| microsoft | sharepoint_services | 3.0 | cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x64:*:*:*:*:* |