CVE-2001-0288
Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2001-0288- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2001-0288- Updated
- 2026-11-02
EUVDEUVD-2001-0288 No score
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.
- Record
EUVD-2001-0288- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-85gx-fwrr-6mpx No score
Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence...
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.
- Record
GHSA-85gx-fwrr-6mpx- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Linux Kernel 2.2 - Predictable TCP Initial Sequence Number | 1999-09-27 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2001-0288 is a high vulnerability (CVSS 7.5) in Cisco Ios, published May 3, 2001. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.41%, the 92nd percentile. No source names a fixed version.