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CVE-2020-11899

KEVTreck TCP/IP stack Out-of-Bounds Read Vulnerability

The Treck TCP/IP stack contains an IPv6 out-of-bounds read vulnerability.

The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.

CVSS 3.1 vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
PublishedJun 17, 2020
Last modifiedJun 17, 2026
Added to KEVMar 3, 2022
Remediation dueMar 17, 2022
    59
    Risk assessment · Medium

    Actively exploited. Patch immediately.

    Exploitation
    Confirmed in the wild (CISA KEV)
    Federal remediation deadline
    Overdue by 1685 days
    CVSS
    5.4 MEDIUM
    EPSS (30-day exploit probability)
    18.4% · top 3% of all CVEs
    Weakness
    CWE-125
    Preconditions
    No privileges and no user interaction
    1. 1.Apply updates per vendor instructions.
    2. 2.Treat as emergency change: patch or isolate internet-facing instances first.
    3. 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

    Assessment is derived automatically from the live signals above; verify against your own asset inventory.