What’s Vulnerable › Vulnerabilities

CVE-2001-0721

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 17.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2001-11-22 · updated 2026-06-16

Description

Universal Plug and Play (UPnP) in Windows 98, 98SE, ME, and XP allows remote attackers to cause a denial of service (memory consumption or crash) via a malformed UPnP request.

Affected products

• Microsoft Windows 98: all versions
• Microsoft Windows 98Se: all versions
• Microsoft Windows Me: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://marc.info/?l=bugtraq&m=100467787323377&w=2
• http://marc.info/?l=bugtraq&m=100528449024158&w=2
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-054
• http://marc.info/?l=bugtraq&m=100467787323377&w=2
• http://marc.info/?l=bugtraq&m=100528449024158&w=2
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-054

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