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TI-2021-13589 Aliases CVE-2021-34571GHSA-mmrg-jwv9-9h53

Hard-coded Credentials in Enbra Wireless M-Bus devices

Priority LOW 28CWE-798Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-798.

Summary

Multiple Wireless M-Bus devices by Enbra use Hard-coded Credentials in Security mode 5 without an option to change the encryption key. An adversary can learn all information that is available in Enbra EWM.

Why it matters now

EPSS 0.00226 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
EnbraAT-WMBUS-16-2——No fix listedCNA
EnbraER-AM DN 15——No fix listedCNA
EnbraEWM 1.7.2903.11.2019—No fix listedCNA
  • AT-WMBUS-16-2 VendorEnbra Affected — Fixed in — No fix listed CNA
  • ER-AM DN 15 VendorEnbra Affected — Fixed in — No fix listed CNA
  • EWM 1.7.29 VendorEnbra Affected 03.11.2019 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:enbra:ewm:1.7.29:*:*:*:*:*:*:*1.7.29VulnerableEnbra
  • cpe:2.3:a:enbra:ewm:1.7.29:*:*:*:*:*:*:* Versions 1.7.29 Vulnerable ·Enbra

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34571
  2. 2026-10-03 Alias added: GHSA-mmrg-jwv9-9h53

References

Advisory 1

  • TI-2021-13590 Insufficient Verification of Data Authenticity in Enbra EWM (replay attack) CVSS 3.1MEDIUM 6.5
  • TI-2021-13591 Incorrect calculation in Enbra EWM does not report backflows or no flow events CVSS 3.1MEDIUM 6.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences