How severe is CVE-2009-0231?

CVE-2009-0231 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2009-0231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 37% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0231?

CVE-2009-0231 primarily affects Microsoft Windows 2000. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0231?

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

When was CVE-2009-0231 published?

CVE-2009-0231 was published on 2009-07-15 and last updated on 2026-06-16.

CVE-2009-0231

CVE-2009-0231 is a high-severity vulnerability in Microsoft Windows 2000 with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 37% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-681.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 37% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-681
Affected product: Microsoft Windows 2000
Published: 2009-07-15
Last modified: 2026-06-16

Description

The Embedded OpenType (EOT) Font Engine (T2EMBED.DLL) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote attackers to execute arbitrary code via a crafted name table in a data record that triggers an integer truncation and a heap-based buffer overflow, aka "Embedded OpenType Font Heap Overflow Vulnerability."

Frequently asked questions

What is CVE-2009-0231?: The Embedded OpenType (EOT) Font Engine (T2EMBED.DLL) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 Gold and SP2 allows remote attackers to execute arbitrary code via a crafted name table in a data record that triggers an integer truncation and a heap-based buffer overflow, aka "Embedded OpenType Font Heap Overflow Vulnerability."
How severe is CVE-2009-0231?: CVE-2009-0231 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2009-0231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 37% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0231?: CVE-2009-0231 primarily affects Microsoft Windows 2000. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-0231 published?: CVE-2009-0231 was published on 2009-07-15 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:o:microsoft:windows_2000:-:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp2:*:*:professional:*:x64:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*

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