CVE-2006-6266

Teredo vulnerability

CVSS

6.8

EPSS

11.7%

EPSS pct

96th

Exploited

No known

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 vendor

Microsoft

Affected product

Teredo

CVSS vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Published

2006-12-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 11.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2006-6266

Confirm whether Microsoft Teredo is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-6266.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-6266

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