CVE-2000-0834
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows...
CVE-2000-0834 is a high vulnerability (CVSS 7.5) in Microsoft Windows 2000, published November 14, 2000. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 39.6%, the 98th percentile. No source names a fixed version.
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
Exploit likelihood
What each source reports
NVD Score used
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
- Record
CVE-2000-0834- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
- Record
CVE-2000-0834- Updated
- 2026-11-02
EUVDEUVD-2000-0821 No score
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
- Record
EUVD-2000-0821- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4m4v-vqhc-mhjp No score
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows...
The Windows 2000 telnet client attempts to perform NTLM authentication by default, which allows remote attackers to capture and replay the NTLM challenge/response via a telnet:// URL that points to the malicious server, aka the "Windows 2000 Telnet Client NTLM Authentication" vulnerability.
- Record
GHSA-4m4v-vqhc-mhjp- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft Windows Server 2000 - 'telnet.exe' NTLM Authentication | 2000-08-14 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD |