CVE-2026-38577

CRITICAL9.8

Published 2026-08-31 · Updated 2026-09-01 · Source cve@mitre.org

Insecure hardcoded credentials in the Admin account of Tenda HG21 V4.0.0-260302 allows attackers to gain root access.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-798

Same severity, most recent

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An issue in the NetStaX EtherNet/IP Stack prior to v5.6.1 could allow a large Class 3 explicit-message request to exceed the application-side receive buffer without generating an error or warning. The result could be memory corruption, a device crash, or a potential remote attack vector without the originating device receiving a CIP error indicating that the request could not be processed.
2026-09-01 · score 9.8
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CVE-2026-84121
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2026-09-01 · score 9.6
CVE-2026-84119
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