CVE-2007-1239

CVE-2007-1239 is a medium-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Microsoft Excel 2003 does not properly parse .XLS files, which allows remote attackers to cause a denial of service (application crash) via a file with a (1) corrupted XML format or a (2) corrupted XLS format, which triggers a NULL pointer dereference.

Frequently asked questions

What is CVE-2007-1239?
Microsoft Excel 2003 does not properly parse .XLS files, which allows remote attackers to cause a denial of service (application crash) via a file with a (1) corrupted XML format or a (2) corrupted XLS format, which triggers a NULL pointer dereference.
How severe is CVE-2007-1239?
CVE-2007-1239 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-1239 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1239?
CVE-2007-1239 primarily affects Microsoft Excel. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-1239?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-1239 published?
CVE-2007-1239 was published on 2007-03-03 and last updated on 2026-06-16.

References

Affected products (3)

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