How severe is CVE-2004-1667?

CVE-2004-1667 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-1667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-1667?

CVE-2004-1667 primarily affects Gearbox Software Halo Combat Evolved. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-1667?

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

When was CVE-2004-1667 published?

CVE-2004-1667 was published on 2004-09-09 and last updated on 2026-06-16.

CVE-2004-1667

CVE-2004-1667 is a medium-severity vulnerability in Gearbox Software Halo Combat Evolved with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gearbox Software Halo Combat Evolved
Published: 2004-09-09
Last modified: 2026-06-16

Description

Off-by-one error in Halo Combat Evolved 1.04 and earlier allows remote attackers to cause a denial of service (server crash) via a long client response.

Frequently asked questions

What is CVE-2004-1667?: Off-by-one error in Halo Combat Evolved 1.04 and earlier allows remote attackers to cause a denial of service (server crash) via a long client response.
How severe is CVE-2004-1667?: CVE-2004-1667 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-1667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-1667?: CVE-2004-1667 primarily affects Gearbox Software Halo Combat Evolved. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-1667?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-1667 published?: CVE-2004-1667 was published on 2004-09-09 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:gearbox_software:halo_combat_evolved:1.2:*:*:*:*:*:*:*
cpe:2.3:a:gearbox_software:halo_combat_evolved:1.4:*:*:*:*:*:*:*
cpe:2.3:a:gearbox_software:halo_combat_evolved:1.31:*:*:*:*:*:*:*

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CVE-2005-1741 — Medium (CVSS 5.0): Gearbox Software Halo: Combat Evolved 1.6 allows remote attackers to cause a denial of service (infinite loop) via…
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