Security readout for executives and security teams
Plain-English summary
Some Bender/ebee charge controllers can reveal the RFID from the most recent charging event without login. This is a privacy and confidentiality issue for EV charging environments. The sources do not show active exploitation or a named patch, so urgency depends on whether affected controllers are reachable over untrusted networks.
Executive priority
Prioritize exposed chargers because the issue is unauthenticated and network reachable, but scope appears limited to RFID confidentiality. Address public or shared-network exposure first, then follow vendor guidance for durable remediation.
Technical view
CVE-2021-34589 is CWE-200 information exposure in Bender/ebee CC612, CC613, ICC15xx, and ICC16xx controllers on listed 5.11.x, 5.12.x, 5.13.x, and 5.20.x firmware. The CVSS vector is network, low complexity, unauthenticated, no user interaction, with high confidentiality impact only.
Likely exposure
Organizations operating EV charge infrastructure using the listed Bender/ebee controllers may be exposed, especially where the web interface is reachable beyond trusted management networks. Evidence only supports disclosure of the last charge event RFID, not broader account takeover or service disruption.
Exploitation context
The bundle states unauthenticated network access via the web interface can read the last charge event RFID. CISA KEV status is false in the bundle, and no cited source states active exploitation. Treat internet-reachable or shared-network chargers as higher priority.
Researcher notes
Available evidence is concise: affected model families, firmware branches, CWE-200, CVSS 7.5, and unauthenticated RFID disclosure through the web interface. No endpoint details, proof of exploitation, or confirmed fixed versions are included in the provided bundle.
Mitigation direction
- Check VDE-2021-047 and Bender/ebee support for firmware or configuration guidance.
- Inventory CC612, CC613, ICC15xx, and ICC16xx controllers and firmware versions.
- Restrict charger web interfaces to trusted management networks only.
- Block public internet access to affected management interfaces.
- Review privacy handling for RFID identifiers exposed by charging systems.
Validation and detection
- Confirm whether deployed controller models match the affected product list.
- Compare firmware against 5.11.x, 5.12.x, 5.13.x, and 5.20.x.
- Verify unauthenticated users cannot view last charge RFID data.
- Review perimeter and internal firewall rules for web interface exposure.
- Check web interface access logs for unexpected unauthenticated access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-34589 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.vde.com/en/advisories/VDE-2021-047CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.