CVE-2021-34577 - CVE House

Status published Medium CVE-2021-34577

Hardcoded credentials in Kaden PICOFLUX AiR

6.5 CVSS

Vulnerability Description

In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Libor POLČÁK reported to CERT@VDE

References

https://www.fit.vutbr.cz/~polcak/CVE-2021-34577

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CVE-2021-34576

Observable discrepancy in Kaden PICOFLUX AiR leaks water consumption

Medium 4.3

Affected Vendor

Kaden

View all reports →

Affected Software

PICOFLUX AiR

Vulnerable Versions:

all

Timeline

Official Publish: November 9th, 2022

Last Modified: May 1st, 2025

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-798

MITRE ATT&CK TTPs

T1552 Unsecured Credentials

Credential Access

T1078 Valid Accounts

Persistence

T1021 Remote Services

Lateral Movement

T1190 Exploit Public-Facing Application

Initial Access

T1098 Account Manipulation

Privilege Escalation