When was CVE-2006-0021 disclosed?

CVE-2006-0021 was first published in the National Vulnerability Database on February 14, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2006-0021 actively exploited?

CVE-2006-0021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2006-0021?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-0021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2006-0021

NONECVSS 0.0Weaponized

0.0

Microsoft Windows XP SP1 and SP2, and Server 2003 up to SP1, allows remote attackers to cause a denial of service (hang) via an IGMP packet with an invalid IP option, aka the "IGMP v3 DoS Vulnerability."

CVSS v3: —
EG Score: —
EPSS: 98.7%
KEV: Not listed

References (32)

secure@microsofthttp://secunia.com/advisories/18853
secure@microsofthttp://securitytracker.com/id?1015629
secure@microsofthttp://www.kb.cert.org/vuls/id/839284
secure@microsofthttp://www.securiteam.com/exploits/5PP0T0KI0O.html
secure@microsofthttp://www.securityfocus.com/archive/1/482658/30/4350/threaded
secure@microsofthttp://www.securityfocus.com/bid/16645
secure@microsofthttp://www.us-cert.gov/cas/techalerts/TA06-045A.html
secure@microsofthttp://www.vupen.com/english/advisories/2006/0576
secure@microsofthttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-007
secure@microsofthttps://exchange.xforce.ibmcloud.com/vulnerabilities/24489
secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1310
secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1425
secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1647
secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1662
secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A678

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CVE-2006-0021

Published

Last Modified

References (32)

Data Freshness Timeline

Publicly available exploits

Frequently asked(4)

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Is Your Infrastructure Affected by CVE-2006-0021?

CVE-2006-0021

📅 Published

🔄 Last Modified

🔗 References (32)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2006-0021?

Published

Last Modified

References (32)

Frequently asked(4)