CVE-2006-6264

CVE-2006-6264 is a high-severity vulnerability in Microsoft Teredo with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Teredo creates trusted peer entries for arbitrary incoming source Teredo addresses, even if the low 32 bits represent an intranet address, which might allow remote attackers to send IPv4 traffic to intranet hosts that use non-RFC1918 addresses, bypassing IPv4 ingress filtering.

Frequently asked questions

What is CVE-2006-6264?
Teredo creates trusted peer entries for arbitrary incoming source Teredo addresses, even if the low 32 bits represent an intranet address, which might allow remote attackers to send IPv4 traffic to intranet hosts that use non-RFC1918 addresses, bypassing IPv4 ingress filtering.
How severe is CVE-2006-6264?
CVE-2006-6264 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-6264 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6264?
CVE-2006-6264 affects Microsoft Teredo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6264?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-6264 published?
CVE-2006-6264 was published on 2006-12-04 and last updated on 2026-06-16.

References

Affected products (1)

More vulnerabilities in Microsoft Teredo

All CVEs affecting Microsoft Teredo →