How severe is CVE-2009-3830?

CVE-2009-3830 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-3830 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3830?

CVE-2009-3830 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-3830?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-3830 published?

CVE-2009-3830 was published on 2009-10-30 and last updated on 2026-06-16.

CVE-2009-3830

CVE-2009-3830 is a medium-severity vulnerability in Microsoft Sharepoint Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 33% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 33% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Sharepoint Server
Published: 2009-10-30
Last modified: 2026-06-16

Description

The download functionality in Team Services in Microsoft Office SharePoint Server 2007 12.0.0.4518 and 12.0.0.6219 allows remote attackers to read ASP.NET source code via pathnames in the SourceUrl and Source parameters to _layouts/download.aspx.

Frequently asked questions

What is CVE-2009-3830?: The download functionality in Team Services in Microsoft Office SharePoint Server 2007 12.0.0.4518 and 12.0.0.6219 allows remote attackers to read ASP.NET source code via pathnames in the SourceUrl and Source parameters to _layouts/download.aspx.
How severe is CVE-2009-3830?: CVE-2009-3830 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-3830 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3830?: CVE-2009-3830 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-3830?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3830 published?: CVE-2009-3830 was published on 2009-10-30 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:sharepoint_server:2007:*:*:*:*:*:*:*

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