CVE-2001-0751 json
Cisco switches and routers running CBOS 2.3.8 and earlier use predictable TCP Initial Sequence Numbers (ISN), which allows remote attackers…
published 2001-10-18 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0736
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 1
- Exploit-DB
Summary
Cisco switches and routers running CBOS 2.3.8 and earlier use predictable TCP Initial Sequence Numbers (ISN), which allows remote attackers to spoof or hijack TCP connections.
Patch / fix
Timeline
- First public exploit (EDB-19522)
- Published
Exploit prediction
2.59% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-19522 Linux Kernel 2.2 - Predictable TCP Initial Sequence Number remote, 1999-09-27
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
cisco.com
/warp/public/707/CBOS-multiple2-pub.html
vendor-advisory, patch
-
exchange.xforce.ibmcloud.com
/vulnerabilities/139
vdb-entry
Sources
- CVE List CVE-2001-0751
- NVD CVE-2001-0751
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.