How severe is CVE-2001-1055?

CVE-2001-1055 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1055?

CVE-2001-1055 primarily affects Microsoft Windows 98. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1055?

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

When was CVE-2001-1055 published?

CVE-2001-1055 was published on 2001-07-30 and last updated on 2026-06-16.

CVE-2001-1055

CVE-2001-1055 is a medium-severity vulnerability in Microsoft Windows 98 with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Windows 98
Published: 2001-07-30
Last modified: 2026-06-16

Description

The Microsoft Windows network stack allows remote attackers to cause a denial of service (CPU consumption) via a flood of malformed ARP request packets with random source IP and MAC addresses, as demonstrated by ARPNuke.

Frequently asked questions

What is CVE-2001-1055?: The Microsoft Windows network stack allows remote attackers to cause a denial of service (CPU consumption) via a flood of malformed ARP request packets with random source IP and MAC addresses, as demonstrated by ARPNuke.
How severe is CVE-2001-1055?: CVE-2001-1055 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1055?: CVE-2001-1055 primarily affects Microsoft Windows 98. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1055?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1055 published?: CVE-2001-1055 was published on 2001-07-30 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:microsoft:windows_98:*:gold:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_98se:*:*:*:*:*:*:*:*

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