How severe is CVE-2007-0028?

CVE-2007-0028 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-0028 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-2007-0028?

CVE-2007-0028 primarily affects Microsoft Excel. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-0028 published?

CVE-2007-0028 was published on 2007-01-09 and last updated on 2026-06-16.

CVE-2007-0028

CVE-2007-0028 is a critical-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 9.3. 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: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 33% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Excel
Published: 2007-01-09
Last modified: 2026-06-16

Description

Microsoft Excel 2000, 2002, 2003, Viewer 2003, Office 2004 for Mac, and Office v.X for Mac does not properly handle certain opcodes, which allows user-assisted remote attackers to execute arbitrary code via a crafted XLS file, which results in an "Improper Memory Access Vulnerability." NOTE: an early disclosure of this issue used CVE-2006-3432, but only CVE-2007-0028 should be used.

Frequently asked questions

What is CVE-2007-0028?: Microsoft Excel 2000, 2002, 2003, Viewer 2003, Office 2004 for Mac, and Office v.X for Mac does not properly handle certain opcodes, which allows user-assisted remote attackers to execute arbitrary code via a crafted XLS file, which results in an "Improper Memory Access Vulnerability." NOTE: an early disclosure of this issue used CVE-2006-3432, but only CVE-2007-0028 should be used.
How severe is CVE-2007-0028?: CVE-2007-0028 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-0028 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-2007-0028?: CVE-2007-0028 primarily affects Microsoft Excel. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-0028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-0028 published?: CVE-2007-0028 was published on 2007-01-09 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:microsoft:excel:2000:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2000:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2002:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:xp:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel:2003:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2003:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:excel_viewer:2003:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:works:2004:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:works:2005:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:*
cpe:2.3:a:microsoft:office:v.x:*:mac:*:*:*:*:*

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