CVE-2004-0201

CVE-2004-0201 is a critical-severity vulnerability in Avaya Ip600 Media Servers with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 45% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Heap-based buffer overflow in the HtmlHelp program (hh.exe) in HTML Help for Microsoft Windows 98, Me, NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary commands via a .CHM file with a large length field, a different vulnerability than CVE-2003-1041.

Frequently asked questions

What is CVE-2004-0201?
Heap-based buffer overflow in the HtmlHelp program (hh.exe) in HTML Help for Microsoft Windows 98, Me, NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary commands via a .CHM file with a large length field, a different vulnerability than CVE-2003-1041.
How severe is CVE-2004-0201?
CVE-2004-0201 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2004-0201 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 45% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0201?
CVE-2004-0201 primarily affects Avaya Ip600 Media Servers. In total, 54 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0201?
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-2004-0201 published?
CVE-2004-0201 was published on 2004-08-06 and last updated on 2026-06-16.

References

Affected products (54)

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