CVE-2004-1306

CVE-2004-1306 is a medium-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 5.1. Its EPSS exploit-prediction score of 35% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.1)
• EPSS exploit prediction: 35% (98th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Microsoft Windows 2000
• Published: 2004-12-31
• Last modified: 2026-06-16

Description

Heap-based buffer overflow in winhlp32.exe in Windows NT, Windows 2000 through SP4, Windows XP through SP2, and Windows 2003 allows remote attackers to execute arbitrary code via a crafted .hlp file.

Frequently asked questions

What is CVE-2004-1306?

Heap-based buffer overflow in winhlp32.exe in Windows NT, Windows 2000 through SP4, Windows XP through SP2, and Windows 2003 allows remote attackers to execute arbitrary code via a crafted .hlp file.

How severe is CVE-2004-1306?

CVE-2004-1306 has a CVSS 2.0 base score of 5.1, rated medium severity.

Is CVE-2004-1306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 35% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1306?

CVE-2004-1306 primarily affects Microsoft Windows 2000. In total, 58 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-1306?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-1306 published?

CVE-2004-1306 was published on 2004-12-31 and last updated on 2026-06-16.

References

• http://marc.info/?l=bugtraq&m=110383690219440&w=2
• http://www.securityfocus.com/bid/12092
• http://www.xfocus.net/flashsky/icoExp/
• https://exchange.xforce.ibmcloud.com/vulnerabilities/18678

Affected products (58)

• cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2000:*:sp1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2000:*:sp2:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2000:*:sp3:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:datacenter_64-bit:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:enterprise:*:64-bit:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:enterprise:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:enterprise_64-bit:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:enterprise_64-bit:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:r2:*:64-bit:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:r2:*:datacenter_64-bit:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:r2:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:standard:*:64-bit:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:standard:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:web:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_2003_server:web:sp1_beta_1:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:*:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:*:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:*:terminal_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:*:workstation:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp1:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp1:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp1:terminal_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp1:workstation:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp2:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp2:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp2:terminal_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp2:workstation:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp3:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp3:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp3:terminal_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp3:workstation:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp4:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp4:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp4:terminal_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp4:workstation:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp5:enterprise_server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp5:server:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_nt:4.0:sp5:terminal_server:*:*:*:*:*

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