Detections
Analytics

CVE-2000-0991

critical

Description

Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote attackers to execute arbitrary commands via a long telnet URL, aka the "HyperTerminal Buffer Overflow" vulnerability.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/5387

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-079

Details

Source: Mitre, NVD

Published: 2000-12-19

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.09142