What’s Vulnerable › Vulnerabilities

CVE-2000-0834

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 39.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2000-11-14 · updated 2026-06-16

Description

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.

Affected products

• Microsoft Windows 2000: all versions

References

• http://www.atstake.com/research/advisories/2000/a091400-1.txt
• http://www.securityfocus.com/bid/1683
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-067
• https://exchange.xforce.ibmcloud.com/vulnerabilities/5242
• http://www.atstake.com/research/advisories/2000/a091400-1.txt
• http://www.securityfocus.com/bid/1683
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-067
• https://exchange.xforce.ibmcloud.com/vulnerabilities/5242

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