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CVE-2020-11899 (GCVE-0-2020-11899)

Vulnerability from cvelistv5 – Published: 2020-06-17 10:27 – Updated: 2025-10-21 23:35
VLAI CISA Previdian
Summary
The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.
Severity
5.4 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: active Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 19:52 UTC
CWE
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 397d6200-67e6-4d4e-b372-5b5d8c6332fe

Vulnerability ID: CVE-2020-11899

Status: Confirmed

Status Updated: 2022-03-03 00:00 UTC

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

Vulnerability ID: CVE-2020-11899

Status: Confirmed

Status Updated: 2022-03-03 00:00 UTC

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
Show details on NVD website
To clipboard 

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  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.