CVE-2006-6265

Teredo vulnerability

CVSS

5.8

EPSS

4.3%

EPSS pct

90th

Exploited

No known

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.

Affected vendor

Microsoft

Affected product

Teredo

CVSS vector

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

Published

2006-12-04

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable from an adjacent network, low 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 4.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2006-6265

Confirm whether Microsoft Teredo is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-6265.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-6265

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-6265 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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