How severe is CVE-2009-0566?

CVE-2009-0566 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-0566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0566?

CVE-2009-0566 affects Microsoft Office Publisher. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-0566?

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-2009-0566 published?

CVE-2009-0566 was published on 2009-07-15 and last updated on 2026-06-16.

CVE-2009-0566

CVE-2009-0566 is a critical-severity vulnerability in Microsoft Office Publisher with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 29% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Office Publisher
Published: 2009-07-15
Last modified: 2026-06-16

Description

Microsoft Office Publisher 2007 SP1 does not properly calculate object handler data for Publisher files, which allows remote attackers to execute arbitrary code via a crafted file in a legacy format that triggers memory corruption, aka "Pointer Dereference Vulnerability."

Frequently asked questions

What is CVE-2009-0566?: Microsoft Office Publisher 2007 SP1 does not properly calculate object handler data for Publisher files, which allows remote attackers to execute arbitrary code via a crafted file in a legacy format that triggers memory corruption, aka "Pointer Dereference Vulnerability."
How severe is CVE-2009-0566?: CVE-2009-0566 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-0566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0566?: CVE-2009-0566 affects Microsoft Office Publisher. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-0566?: 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-2009-0566 published?: CVE-2009-0566 was published on 2009-07-15 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:office_publisher:2007:sp1:*:*:*:*:*:*

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