Is CVE-2009-0558 in the CISA KEV catalog?

No. CVE-2009-0558 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-0558?

CVE-2009-0558 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2009-0558?

CVE-2009-0558 has an EPSS score of 31.07% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-0558

HIGHEPSS 98th pctl

9.3

CVSS v2

NVD

Description

Array index error in Excel in Microsoft Office 2000 SP3 and Office 2004 and 2008 for Mac, and Open XML File Format Converter for Mac, allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Array Indexing Memory Corruption Vulnerability."

CWE-94Code Injection

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

31.07%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.