CISA KEV · Known exploitedMedium

CVE-2020-11899

Treck TCP/IP stack IPv6

CVE-2020-11899 affects Treck TCP/IP stack IPv6. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS
5.4
EPSS
18.6%
97.0% percentile
CISA KEV
Listed
Published
2020.06.17
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability18.6%
Technical severityCVSS 5.4

Vulnerability overview

CVE-2020-11899 affects Treck TCP/IP stack IPv6. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product
Treck TCP/IP stack IPv6
Affected versions
< 6.0.1.66
Fixed versions
6.0.1.66

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.03.17
  1. 1
    Identify

    Confirm that Treck TCP/IP stack IPv6 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
CWE
CWE-125
KEV added
2022.03.03
Ransomware use
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