Is CVE-2006-6265 being actively exploited?

CVE-2006-6265 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-6265?

CVE-2006-6265 has a CVSS 2.0 base score of 5.8 (MEDIUM).

CVE-2006-6265

MEDIUM · CVSS 5.8EPSS 4.6%EU EUVD

Teredo clients, when located behind a restricted NAT, allow remote attackers to establish an inbound connection without the guessing required to find a port mapping for a traditional restricted NAT client, by (1) using the client port number contained in the Teredo address or (2) following the bubble-to-open procedure.

Key facts

CVSS score: 5.8 (v2.0)
Severity: MEDIUM
CVSS vector: AV:A/AC:L/Au:N/C:P/I:P/A:P
EPSS score: 4.6% (92th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-6248)
Published: December 4, 2006
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-6248 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / teredo

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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