Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2001-0751

29
FAUCET Score

CVE-2001-0751 describes a vulnerability in Cisco switches and routers running CBOS 2.3.8 and earlier, where predictable TCP Initial Sequence Numbers (ISNs) can be exploited. This flaw allows remote attackers to spoof or hijack TCP connections, posing a significant risk to network integrity. The vulnerability has a high CVSS score of 7.5, indicating a severe impact with potential for partial compromise of confidentiality, integrity, and availability, and can be exploited remotely with low attack complexity and no authentication. While there is no evidence of active exploitation, dedicated exploit modules, or community discussion specific to this CVE, a related exploit for predictable TCP ISNs in the Linux Kernel 2.2 exists on ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.8CPE matchmatch criteria
cpe:2.3:o:cisco:cbos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-19522 · Sep 27, 1999
This CVE's current EPSS score of 0.0259 is in the 71st percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/139
cisco.com / warp/public/707/CBOS-multiple2-pub.html
PatchVendor Advisory