THREATPORT/VULNERABILITY/CVE-2009-3127
HIGH SEVERITY

CVE-2009-3127

Compatibility Pack Word Excel Powerpoint vulnerability

CVSS
9.3
EPSS
25.1%
EPSS pct
98th
Exploited
No known
Microsoft Office Excel 2002 SP3 and 2003 SP3, Office 2004 and 2008 for Mac, Open XML File Format Converter for Mac, and Office Excel Viewer 2003 SP3 do not properly parse the Excel file format, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Cache Memory Corruption Vulnerability."
Affected vendor
Microsoft
Affected product
Compatibility Pack Word Excel Powerpoint
CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness type (CWE)
Published
2009-11-11

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 25.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2009-3127

  • Confirm whether Microsoft Compatibility Pack Word Excel Powerpoint is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2009-3127.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-3127

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-3127 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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