THREATPORT/VULNERABILITY/CVE-2006-6696
MEDIUM SEVERITY

CVE-2006-6696

Windows 2000 vulnerability

CVSS
6.9
EPSS
3.4%
EPSS pct
88th
Exploited
No known
Double free vulnerability in Microsoft Windows 2000, XP, 2003, and Vista allows local users to gain privileges by calling the MessageBox function with a MB_SERVICE_NOTIFICATION message with crafted data, which sends a HardError message to Client/Server Runtime Server Subsystem (CSRSS) process, which is not properly handled when invoking the UserHardError and GetHardErrorText functions in WINSRV.DLL.
Affected vendor
Microsoft
Affected product
Windows 2000
CVSS vector
AV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2006-12-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, medium attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 3.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2006-6696

  • Confirm whether Microsoft Windows 2000 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2006-6696.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-6696

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-6696 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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