CVE-2021-34589

mediumpriority · track · 30EPSS 0.010 · 62 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.99% (62nd) EPSS
CVSS 5 · medium
Is it mine?
36 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · bender_psirt

EPSS · scored 2026-10-28

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedbender_psirt

    Install latest software update.

  • Mitigationbender_psirt

    Restrict network access to the above-mentioned devices.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · info@cert.vde.comexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · Bender PSIRT DE
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200US
04

affected products (36)

Products and version ranges known to be affected.

showing 20 of 36
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • VDE-2021-047Bender/ebee: Multiple Charge Controller Vulnerabilities2022-04-26csaf · bender_psirtDE

    Bender is publishing this advisory to inform customers about multiple security vulnerabilities in the Charge Controller product families.Bender has analysed the weaknesses and determined that the electrical safety of the devices is not concerned. To Benders knowledge, proof-of-concept code or exploits for the weaknesses are not available to the public.Bender considers some weaknesses to be critical and thus need to be patched immediately. Therefore, patches are provided as maintenance branch versions 5.11.2, 5.12.5, 5.13.2 and 5.20.2. Future software releases will of course already include these patches.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdbender_psirtNVDCVE.orgMITRE
published 2022-04-27modified 2026-06-17
08

references (5)

External citations — patches, advisories, analysis.

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