CVE-2006-6266

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 11.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-12-04 · updated 2026-06-16

Description

Teredo clients, when following item 6 of RFC4380 section 5.2.3, start direct IPv6 connectivity tests (aka ping tests) in response to packets from non-Teredo source addresses, which might allow remote attackers to induce Teredo clients to send packets to third parties.

Affected products

Microsoft Teredo: all versions

References

http://www.securityfocus.com/archive/1/452989/100/0/threaded
http://www.securityfocus.com/archive/1/452996/100/0/threaded
http://www.symantec.com/avcenter/reference/Teredo_Security.pdf
http://www.securityfocus.com/archive/1/452989/100/0/threaded
http://www.securityfocus.com/archive/1/452996/100/0/threaded
http://www.symantec.com/avcenter/reference/Teredo_Security.pdf

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