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CVE-2000-1149

25
FAUCET Score

CVE-2000-1149 describes a buffer overflow vulnerability in RegAPI.DLL, affecting Windows NT 4.0 Terminal Server. This flaw allows unauthenticated remote attackers to execute arbitrary commands by submitting an overly long username during the login process. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. Despite its age and severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
terminal_serverCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:terminal_server:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
16.06%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1606 is in the 95th percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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/ms00-087
exchange.xforce.ibmcloud.com / vulnerabilities/5489
securityfocus.com / archive/1/143991
ExploitPatchVendor Advisory
securityfocus.com / bid/1924
PatchVendor Advisory