CVE-2001-0288

CVE-2001-0288 is a none vulnerability published on May 3, 2001. Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (ISNs), which allows remote attackers to spoof or hijack TCP connections.

CVE-2001-0288 was first published in the National Vulnerability Database on May 3, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2001-0288 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-0288, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.