How severe is CVE-2008-1440?

CVE-2008-1440 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2008-1440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1440?

CVE-2008-1440 primarily affects Microsoft Windows Server 2003. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-1440?

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-2008-1440 published?

CVE-2008-1440 was published on 2008-06-12 and last updated on 2026-06-16.

CVE-2008-1440

CVE-2008-1440 is a high-severity vulnerability in Microsoft Windows Server 2003 with a CVSS 2.0 base score of 7.1. Its EPSS exploit-prediction score of 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-1284.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 23% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1284
Affected product: Microsoft Windows Server 2003
Published: 2008-06-12
Last modified: 2026-06-16

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."

Frequently asked questions

What is CVE-2008-1440?: 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."
How severe is CVE-2008-1440?: CVE-2008-1440 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2008-1440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1440?: CVE-2008-1440 primarily affects Microsoft Windows Server 2003. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-1440?: 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-2008-1440 published?: CVE-2008-1440 was published on 2008-06-12 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:microsoft:windows_server_2003:*:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*

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