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CVE-2001-0663

44
FAUCET Score

CVE-2001-0663 describes a denial-of-service vulnerability in the Terminal Server component of Microsoft Windows NT and Windows 2000. Remote attackers can exploit this by sending a specific sequence of invalid Remote Desktop Protocol (RDP) packets. With a CVSS score of 5.0 (Medium), this vulnerability is easily exploitable over the network with low attack complexity, leading to a denial of service. While not listed in CISA's KEV catalog, exploit code is publicly available via ExploitDB, and it has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
31.62%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-21123 · Oct 18, 2001
This CVE's current EPSS score of 0.3162 is in the 98th percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2001/ms01-052
exchange.xforce.ibmcloud.com / vulnerabilities/7302
securityfocus.com / bid/3445