CVE-2026-8979

CRITICAL EPSS 44.8%

Published May 28, 20261mo ago · Modified Jun 17, 20262w ago

9.3 CVSS 4.0

Critical

Published May 28, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

9.3

Exploitability

—

Impact

—

Vector string

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

44.8% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

References 1

cyberdanube.com https://cyberdanube.com/security-research/multiple-vulnerabilities-in-mennekes-amtron-series/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.