CVE Catalog

CVE-2001-0288

High
Published: Translated: NVD NIST

Summary

Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (ISNs), allowing remote attackers to spoof or hijack TCP connections.

Risk Assessment

Attackers can exploit this vulnerability to take control of TCP connections, potentially leading to unauthorized access to data or services.

Recommendation

It is recommended to upgrade the IOS to a version newer than 12.1 to mitigate this vulnerability.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS