Is CVE-2006-6263 being actively exploited?

CVE-2006-6263 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-6263?

CVE-2006-6263 has a CVSS 2.0 base score of 6.8 (MEDIUM).

CVE-2006-6263

MEDIUM · CVSS 6.8EPSS 12.8%EU EUVD

Teredo clients, when source routing is enabled, recognize a Routing header in an encapsulated IPv6 packet and send the packet to the next hop, which might allow remote attackers to bypass policies of certain Internet gateways that drop all source-routed packets.

Key facts

CVSS score: 6.8 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS score: 12.8% (96th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-6246)
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-2006-6246 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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