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CVE Record

CVE-2001-0288: Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (I...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

Older Cisco switches and routers running IOS 12.1 or earlier may generate predictable TCP sequence numbers. That can make some TCP connections easier to spoof or hijack. The main business risk is legacy network infrastructure still running affected IOS and exposing TCP-based services to untrusted networks. Exposure is most likely in legacy Cisco switches or routers still running IOS 12.1 or earlier. Risk increases where TCP services on those devices are reachable from untrusted or poorly segmented networks. Treat this as a legacy infrastructure exposure. It is not KEV-listed in the supplied data, but affected network devices can be important trust anchors, so remaining IOS 12.1-or-earlier systems should be identified and remediated. Mitigation focus: Inventory Cisco switches and routers for IOS versions 12.1 or earlier.; Review Cisco advisory guidance for fixed releases or recommended upgrade paths.; Restrict TCP access to device services from untrusted networks..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
1Source links

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Source materials

Affected products

Products and packages named in the record

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n/an/an/aListed
Weakness

CWE details

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