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TI-2026-07896 Aliases CVE-2026-8979GHSA-m7v3-p7g2-xh6x

Authentication bypass in Mennekes Amtron

Priority HIGH 75CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00784 56th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MennekesAmtronup to 5.22.3—No fix listedCNA
  • Amtron VendorMennekes Affected up to 5.22.3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-8979
  2. 2026-10-03 Alias added: GHSA-m7v3-p7g2-xh6x

References

Other 1

  • TI-2026-07897 Privilege escalation in Mennekes Amtron CVSS 4.0CRITICAL 9.3
  • TI-2025-16272 Mennekes smart/premium charges systems, Command injection in sCU firmware update CVSS 4.0HIGH 8.7
  • TI-2025-16271 Mennekes smart/premium charges systems, Command injection in time setting CVSS 4.0HIGH 8.7
  • TI-2025-16270 Mennekes smart/premium charges systems, Command injection in firmware upgrade CVSS 4.0HIGH 8.7
  • TI-2025-16273 Mennekes smart/premium charges systems, Arbitrary file download using ReadFile endpoint CVSS 4.0HIGH 7.1
  • TI-2025-16274 Mennekes smart/premium charges systems, SQL Injection in web configuration interface CVSS 4.0MEDIUM 5.3

Sources

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