CVE-2006-6263: n/a vulnerability

CVE-2006-6263: Teredo clients, when source routing is enabled, recognize a Routing header in an encapsulated IPv6 packet a...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 20:19 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE describes a Teredo client behavior where encapsulated IPv6 packets with routing headers may be forwarded when source routing is enabled. The business concern is policy bypass: gateways configured to drop source-routed traffic might not see or enforce the same control inside Teredo encapsulation. Exposure is most plausible where Teredo or similar IPv6 transition handling is enabled and source routing is allowed on clients. The source bundle lists affected vendor and product as n/a, so product-level exposure cannot be confirmed from the provided evidence. Treat this as a targeted configuration and architecture review item, not an emergency patch event. Prioritize environments relying on gateway source-routing blocks or where Teredo may traverse network controls unexpectedly. Mitigation focus: Check vendor guidance for Teredo, IPv6 routing headers, and source routing behavior.; Inventory systems and gateways where Teredo or IPv6 transition mechanisms are enabled.; Disable source routing or Teredo only where vendor guidance and business needs support it..

Prepared: Jun 29, 2026, 08:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 4, 2006, 11:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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