VulnerabilityModified
CVE-2001-0288
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.
HIGH 7.5EPSS 5.41%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 5.41% probability · 92th percentile
- CISA KEV
- Not listed
- Affected
- cisco/ios
- Source
- cve@mitre.org
References
- http://www.cisco.com/warp/public/707/ios-tcp-isn-random-pub.shtmlPatch, Vendor Advisory
- http://www.cisco.com/warp/public/707/ios-tcp-isn-random-pub.shtmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.