CVE-2020-11896

Exp

The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Published: 2020-06-17 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-11896 is rated High Exploit Risk (89.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 42.88%, 97th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-11896

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-11896

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-04 42.63% 42.88% +0.25%
2 2026-03-31 38.20% 42.63% +4.43%
3 2026-03-21 — 38.20% —

Full EPSS history (33 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11896

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2020-11896

Affected software / configurations for CVE-2020-11896

Vendor Product Version Raw CPE
treck tcp\/ip < 6.0.1.66 cpe:2.3:a:treck:tcp\/ip:*:*:*:*:*:*:*:*

References for CVE-2020-11896

URL Tags
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
https://cert-portal.siemens.com/productcert/pdf/ssa-631949.pdf
https://jsof-tech.com/vulnerability-disclosure-policy/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20200625-0006/
https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbhf04012en_us
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC Third Party Advisory
https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
https://www.jsof-tech.com/ripple20/ Exploit Third Party Advisory
https://www.kb.cert.org/vuls/id/257161
https://www.kb.cert.org/vuls/id/257161/ Mitigation Third Party Advisory US Government Resource
https://www.treck.com Product Vendor Advisory
cvelogic Threat Intelligence