Stack-based buffer overflow in the LRPC client in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 allows local users to gain privileges by operating an LRPC server that sends a crafted LPC port message, aka "LRPC Client Buffer Overrun Vulnerability."
Conclusion & alert: CVE-2013-3878 is rated Moderate Risk (54.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.19%). Mandatory action: Review affected assets and schedule 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 | 2025-03-30 | 0.90% | 1.19% | +0.29% |
| 2 | 2025-03-29 | 1.19% | 0.90% | -0.29% |
| 3 | 2025-03-19 | — | 1.19% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.9 | 2.0 | MEDIUM |
|
3.4 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_server_2003 | — | cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:* |