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CVE-2001-0503

21
FAUCET Score

CVE-2001-0503 describes a denial-of-service vulnerability in Microsoft NetMeeting 3.01 when Remote Desktop Sharing is enabled. An unauthenticated remote attacker can exploit this by sending a malformed string to the NetMeeting service port. This vulnerability has a CVSS score of 5.0 (Medium), indicating a low attack complexity and no authentication required, leading to a potential denial of service. There is no known public exploit code, active exploitation, or significant community discussion surrounding this nearly two-decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.01CPE matchmatch criteria
cpe:2.3:a:microsoft:netmeeting:3.01:*:*:*:*:*:*:*

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
17.34%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1734 is in the 96th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

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/2000/ms00-077
iss.net / security_center/static/5368.php
osvdb.org / 5608