CVE-2020-11899 (GCVE-0-2020-11899)
Vulnerability from cvelistv5 – Published: 2020-06-17 10:27 – Updated: 2025-10-21 23:35Summary
The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.
Severity
5.4 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 19:52 UTC
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://cwe.mitre.org/data/definitions/125.html | x_refsource_MISC |
| https://www.kb.cert.org/vuls/id/257161/ | x_refsource_MISC |
| https://www.treck.com | x_refsource_MISC |
| https://jsof-tech.com/vulnerability-disclosure-policy/ | x_refsource_MISC |
| https://www.intel.com/content/www/us/en/security-… | x_refsource_CONFIRM |
| https://www.kb.cert.org/vuls/id/257161 | third-party-advisoryx_refsource_CERT-VN |
| https://www.jsof-tech.com/ripple20/ | x_refsource_MISC |
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
| http://www.arubanetworks.com/assets/alert/ARUBA-P… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2020062… | x_refsource_CONFIRM |
| https://www.dell.com/support/article/de-de/sln321… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 397d6200-67e6-4d4e-b372-5b5d8c6332fe
Exploited: Yes
Timestamps
First Seen: 2022-03-03
Asserted: 2022-03-03
Scope
Notes: KEV entry: Treck TCP/IP stack Out-of-Bounds Read Vulnerability | Affected: Treck TCP/IP stack / IPv6 | Description: The Treck TCP/IP stack contains an IPv6 out-of-bounds read vulnerability. | Required action: Apply updates per vendor instructions. | Due date: 2022-03-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2020-11899
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-125 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | IPv6 |
| Due Date | 2022-03-17 |
| Date Added | 2022-03-03 |
| Vendorproject | Treck TCP/IP stack |
| Vulnerabilityname | Treck TCP/IP stack Out-of-Bounds Read Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f0ef43e7-de1c-4e52-8ddf-f2e166c57b1f
Exploited: Yes
Timestamps
First Seen: 2022-03-03
Asserted: 2022-03-03
Scope
Notes: KEVIntel entry: The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read. | Affected: Treck / TCP/IP stack | CVSS: 5.4 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read. |
| Vendor | Treck |
| Product | TCP/IP stack |
| Added Date | 2022-03-03T00:00:00.000Z |
| Cvss Score | 5.4 |
| Epss Score | None |
| Cvss Severity | MEDIUM |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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"url": "https://www.kb.cert.org/vuls/id/257161/"
},
{
"name": "https://www.treck.com",
"refsource": "MISC",
"url": "https://www.treck.com"
},
{
"name": "https://jsof-tech.com/vulnerability-disclosure-policy/",
"refsource": "MISC",
"url": "https://jsof-tech.com/vulnerability-disclosure-policy/"
},
{
"name": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html",
"refsource": "CONFIRM",
"url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html"
},
{
"name": "VU#257161",
"refsource": "CERT-VN",
"url": "https://www.kb.cert.org/vuls/id/257161"
},
{
"name": "https://www.jsof-tech.com/ripple20/",
"refsource": "MISC",
"url": "https://www.jsof-tech.com/ripple20/"
},
{
"name": "20200617 Multiple Vulnerabilities in Treck IP Stack Affecting Cisco Products: June 2020",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC"
},
{
"name": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt",
"refsource": "CONFIRM",
"url": "http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt"
},
{
"name": "https://security.netapp.com/advisory/ntap-20200625-0006/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20200625-0006/"
},
{
"name": "https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities",
"refsource": "MISC",
"url": "https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2020-11899",
"datePublished": "2020-06-17T10:27:59.000Z",
"dateReserved": "2020-04-19T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:35:41.992Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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