CVE-2006-1309

CVE-2006-1309 is a critical-severity vulnerability in Microsoft Excel with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Description

Microsoft Excel 2000 through 2004 allows user-assisted attackers to execute arbitrary code via a .xls file with a crafted LABEL record that triggers memory corruption.

Frequently asked questions

What is CVE-2006-1309?
Microsoft Excel 2000 through 2004 allows user-assisted attackers to execute arbitrary code via a .xls file with a crafted LABEL record that triggers memory corruption.
How severe is CVE-2006-1309?
CVE-2006-1309 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-1309 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-1309?
CVE-2006-1309 primarily affects Microsoft Excel. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-1309?
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-2006-1309 published?
CVE-2006-1309 was published on 2006-07-13 and last updated on 2026-06-16.

References

Affected products (13)

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