{"id":"CVE-2000-0991","aliases":["EUVD-2000-0978","GHSA-34hw-5cr2-j645"],"status":"published","title":"Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote...","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.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.09694,"percentile":0.95538,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2000-12-19T05:00:00Z","modified":"2026-09-23T09:10:01Z","exploits":[{"source":"exploitdb","id":"EDB-20307","title":"Hilgraeve HyperTerminal 6.0 - Telnet Buffer Overflow","type":"dos","platform":"windows","date":"2000-10-18","verified":true,"url":"https://www.exploit-db.com/exploits/20307"}],"products":[{"vendor":"hilgraeve","product":"hyperterminal"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-079","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.securityfocus.com/bid/1815","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5387","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2000-0991"},{"url":"https://github.com/advisories/GHSA-34hw-5cr2-j645"}],"sources":{"cve":[{"id":"CVE-2000-0991","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.","status":"published","published":"2001-01-22T05:00:00Z","modified":"2024-08-08T05:37:32.109Z","updated_at":"2026-11-02T14:33:41.23606Z"}],"euvd":[{"id":"EUVD-2000-0978","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.","status":"published","published":"2001-01-22T05:00:00Z","modified":"2024-08-08T05:37:32Z","updated_at":"2026-11-03T00:56:22.927724Z"}],"ghsa":[{"id":"GHSA-34hw-5cr2-j645","title":"Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote...","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.","status":"published","published":"2022-04-30T18:14:42Z","modified":"2023-01-30T05:05:18Z","updated_at":"2026-11-02T14:47:14.398767Z"}],"nvd":[{"id":"CVE-2000-0991","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.","status":"published","published":"2000-12-19T05:00:00Z","modified":"2026-09-23T09:10:01.707Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:39.593487Z"}]}}