CVE-2020-11897 json
The Treck TCP/IP stack before 5.0.1.35 has an Out-of-Bounds Write via multiple malformed IPv6 packets.
published 2020-06-17 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4234
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.4%
- EPSS 9.4% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
The Treck TCP/IP stack before 5.0.1.35 has an Out-of-Bounds Write via multiple malformed IPv6 packets.
Patch / fix
- treck tcp/ip 5.0.1.35
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-20-168-01 updated cvss 10.0
Treck TCP/IP (Update I)
-
Treck Inc. Treck Inc TCP/IP IPv4, IPv6, UDP, DNSaffected: mitigation “Treck recommends users apply the latest version of the affected products:” rockwellautomation.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
9.37% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
vendor-advisory, third-party-advisory
-
treck.com
product, vendor-advisory
-
kb.cert.org
/vuls/id/257161/
mitigation, third-party-advisory, us-government-resource
-
jsof-tech.com
/vulnerability-disclosure-policy/
third-party-advisory
-
kb.cert.org
/vuls/id/257161
third-party-advisory
-
jsof-tech.com
/ripple20/
third-party-advisory
- arubanetworks.com /assets/alert/ARUBA-PSA-2020-006.txt
- dell.com /support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
Sources
- CVE List CVE-2020-11897
- NVD CVE-2020-11897
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.