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CVE-2020-11896

52
FAUCET Score

CVE-2020-11896 is a critical remote code execution vulnerability affecting the Treck TCP/IP stack, specifically versions prior to 6.0.1.66, related to IPv4 tunneling. This vulnerability carries a CVSS score of 10.0, indicating a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered significant community discussion and media coverage, highlighting its potential impact on a wide range of IoT devices.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.1.66CPE matchmatch criteria
cpe:2.3:a:treck:tcp\/ip:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

10.0CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
36.96%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.3696 is in the 96th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-631949.pdf
jsof-tech.com / vulnerability-disclosure-policy
Third Party Advisory
security.netapp.com / advisory/ntap-20200625-0006
support.hpe.com / hpesc/public/docDisplay
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
Third Party Advisory
dell.com / support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
jsof-tech.com / ripple20
ExploitThird Party Advisory
kb.cert.org / vuls/id/257161
kb.cert.org / vuls/id/257161
MitigationThird Party AdvisoryUS Government Resource
treck.com
ProductVendor Advisory
arubanetworks.com / assets/alert/ARUBA-PSA-2020-006.txt