CVE-2026-8979 CRITICAL

CVE-2026-8979: Authentication Bypass

Vendor Mennekes
Product Amtron
Weakness CWE-287 · Improper authentication
Published May 28, 2026
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
May 28, 2026 Record updated