CVE-2021-34589: In Bender/ebee Charge Controllers in multiple versions are prone to an RFID leak

Q: How do I fix CVE-2021-34589?

cc612 firmware: upgrade to 5.11.2, 5.12.5, 5.13.2, 5.20.2; cc613 firmware: upgrade to 5.11.2, 5.13.2, 5.20.2; icc613 firmware: upgrade to 5.12.5. Exact commands for each OS are on this page.

Q: Is CVE-2021-34589 being exploited?

CVE-2021-34589 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-34589 affect?

CVE-2021-34589 affects cc612 firmware, cc613 firmware, icc613 firmware. Severity is high (CVSS 7.5). 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.

Q: How urgent is CVE-2021-34589?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEUPGRADEUPGRADE

CVE-2021-34589 is a high-severity flaw (CVSS 7.5) affecting cc612 firmware, cc613 firmware, icc613 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-200
Published	2022-04-27
Last modified	2026-06-17

Publisher (CNA): CERT VDE · Vendor: bender

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-04-27 16:15 UTCPublished CVE record published
2026-06-17 03:56 UTCUpdated Record last modified

bender cc612 firmware UPGRADE

Affected: >= 5.11.0 and < 5.11.2 · >= 5.12.0 and < 5.12.5 · >= 5.13.0 and < 5.13.2 · >= 5.20.0 and < 5.20.2

Fixed in: 5.11.2, 5.12.5, 5.13.2, 5.20.2

Safe to downgrade to: a release before 5.11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

bender cc613 firmware UPGRADE

Affected: >= 5.11.0 and < 5.11.2 · >= 5.13.0 and < 5.13.2 · >= 5.20.0 and < 5.20.2

Fixed in: 5.11.2, 5.13.2, 5.20.2

Safe to downgrade to: a release before 5.11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

bender icc613 firmware UPGRADE

Affected: >= 5.12.0 and < 5.12.5

Fixed in: 5.12.5

Safe to downgrade to: a release before 5.12.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

bender icc15xx firmware UPGRADE

Affected: >= 5.11.0 and < 5.11.2 · >= 5.12.0 and < 5.12.5 · >= 5.13.0 and < 5.13.2 · >= 5.20.0 and < 5.20.2

Fixed in: 5.11.2, 5.12.5, 5.13.2, 5.20.2

Safe to downgrade to: a release before 5.11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

bender icc16xx firmware UPGRADE

Affected: >= 5.11.0 and < 5.11.2 · >= 5.12.0 and < 5.12.5 · >= 5.13.0 and < 5.13.2 · >= 5.20.0 and < 5.20.2

Fixed in: 5.11.2, 5.12.5, 5.13.2, 5.20.2

Safe to downgrade to: a release before 5.11.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-34589?

cc612 firmware: upgrade to 5.11.2, 5.12.5, 5.13.2, 5.20.2; cc613 firmware: upgrade to 5.11.2, 5.13.2, 5.20.2; icc613 firmware: upgrade to 5.12.5. Exact commands for each OS are on this page.

Is CVE-2021-34589 being exploited?

CVE-2021-34589 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-34589 affect?

CVE-2021-34589 affects cc612 firmware, cc613 firmware, icc613 firmware. Severity is high (CVSS 7.5). 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.

How urgent is CVE-2021-34589?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-34602 HIGH 8.8 UPGRADE UPGRADE In Bender/ebee Charge Controllers in multiple versions are prone to Command injection via Web interface
CVE-2021-34601 CRITICAL 9.8 UPGRADE UPGRADE In Bender/ebee Charge Controllers in multiple versions are prone to Hardcoded Credentials
CVE-2021-34592 HIGH 8.8 UPGRADE UPGRADE In Bender/ebee Charge Controllers in multiple versions are prone to Command injection via Web interface
CVE-2021-34591 HIGH 7.8 UPGRADE UPGRADE In Bender/ebee Charge Controllers in multiple versions are prone to Local privilege Escalation
CVE-2021-34590 MEDIUM 5.4 UPGRADE UPGRADE In Bender/ebee Charge Controllers in multiple versions are prone to Cross-site Scripting

References

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