CVE-2021-34589

Bender CC612 — vulnerability CVE-2021-34589

In Bender/ebee Charge Controllers in multiple versions are prone to an RFID leak. The RFID of the last charge event can be read without authentication via the web interface.

CVSS 7.5No patch available

This record: live connection— last retrieved: 7 November 2026 at 14:22.

Vendor

Bender

Products

CC612, CC613, ICC15xx, ICC16xx

up to version <5.20.2

Published

27 April 2022

Last modified

17 June 2026

Original source information

Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.

Technical description

In Bender/ebee Charge Controllers in multiple versions are prone to an RFID leak. The RFID of the last charge event can be read without authentication via the web interface.

CVSS 3.1 — vector details

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

Attack vector

NETWORK

Privileges required

NONE

User interaction

NONE

Confidentiality

High

Integrity

None

Availability

None

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

1.0%

Percentile

63e

Source: FIRST.org, updated on 6 November 2026.

Patch information

Restrict network access to the above-mentioned devices.

IACS Radar assessment

Our own interpretation and context for the source data above.

IACS Radar assessment

Our own interpretation and context for this vulnerability — not an official source.

IACS Radar priority score

47/ 100

Based on CVSS 7.5, EPSS 1.0%, industrial relevance 45/100; raised due to relevance to internet exposure.

Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.

Conditions for exploitation

•Network access to the affected device or segment is required.
•No valid credentials are needed.
•No user interaction required.

Operational impact & energy relevance

Limited impact on availability; the risk lies mainly with confidentiality or integrity of process data.

No strong energy-sector-specific signals recognised; general OT/ICS relevance.

This product uses protocols that are relevant to internet exposure analysis. An internet-reachable service is not automatically vulnerable.

Recommended defensive measures

•Encrypt sensitive configuration and management communication.
•Restrict network access to the affected device to a dedicated OT management segment.
•Implement network segmentation in line with zones and conduits (IEC 62443-3-2).
•Monitor for abnormal protocol traffic using an OT-aware detection system.

Industrial relevance score

45/ 100

• Mentioned in an official CISA ICS advisory, which confirms direct relevance to industrial control systems.
• Description mentions industrial protocol: https.

Classification is provisional; manual verification by an OT security analyst is recommended.

Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.

IEC 62443 mapping

IEC 62443-4-2FR4 · Vertrouwelijkheid van gegevens

Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.

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