Microsoft Windows XP SP1 and SP2 before August 2004, and possibly other operating systems and versions, uses insecure default ACLs that allow the Authenticated Users group to gain privileges by modifying critical configuration information for the (1) Simple Service Discovery Protocol (SSDP), (2) Universal Plug and Play Device Host (UPnP), (3) NetBT, (4) SCardSvr, (5) DHCP, and (6) DnsCache services, aka "Permissive Windows Services DACLs." NOTE: the NetBT, SCardSvr, DHCP, DnsCache already require privileged access to exploit.
Conclusion & alert: CVE-2006-0023 is rated Moderate Risk (40.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.27%). 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 | 2026-06-15 | 0.78% | 1.27% | +0.49% |
| 2 | 2026-03-09 | 1.12% | 0.78% | -0.34% |
| 3 | 2026-02-27 | — | 1.12% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
3.1 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:*:sp1:tablet_pc:*:*:*:*:* |
| microsoft | windows_xp | — | cpe:2.3:o:microsoft:windows_xp:*:sp2:tablet_pc:*:*:*:*:* |