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Vulnerability record · CVE-2008-1440 · published 12 June 2008

CVE-2008-1440: Microsoft windows server 2003 vulnerability

Microsoft · Windows Server 2003

Microsoft Windows XP SP2 and SP3, and Server 2003 SP1 and SP2, does not properly validate the option length field in Pragmatic General Multicast (PGM) packets, which allows remote attackers to cause a denial of service (infinite loop and system hang) via a crafted PGM packet, aka the "PGM Invalid Length Vulnerability."

7.1 CVSS 2.0 High EPSS 23% · top 2.4% CWE-1284 · CWE-1284
7.1CVSS 2.0 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

Microsoft Windows XP SP2 and SP3, and Server 2003 SP1 and SP2, does not properly validate the option length field in Pragmatic General Multicast (PGM) packets, which allows remote attackers to cause a denial of service (infinite loop and system hang) via a crafted PGM packet, aka the "PGM Invalid Length Vulnerability."

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/30587 Broken LinkPermissions RequiredVendor Advisory
http://securitytracker.com/id?1020230 Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/29508 Broken LinkPatchThird Party AdvisoryVDB Entry
http://www.us-cert.gov/cas/techalerts/TA08-162B.html Broken LinkThird Party AdvisoryUS Government Resource
http://www.vupen.com/english/advisories/2008/1783 Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-036 PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5473 Broken Link
http://secunia.com/advisories/30587 Broken LinkPermissions RequiredVendor Advisory
http://securitytracker.com/id?1020230 Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/29508 Broken LinkPatchThird Party AdvisoryVDB Entry
http://www.us-cert.gov/cas/techalerts/TA08-162B.html Broken LinkThird Party AdvisoryUS Government Resource
http://www.vupen.com/english/advisories/2008/1783 Broken Link
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-036 PatchVendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5473 Broken Link

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2008-1440), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.