Security readout for executives and security teams
Plain-English summary
This flaw affects certain Bender/ebee electric vehicle charge controllers. A person who already has authenticated local access could elevate privileges to root, gaining full control of the controller. The main business risk is loss of integrity or availability of charging infrastructure where vulnerable firmware remains deployed.
Executive priority
Prioritize remediation for internet-adjacent, remotely maintained, or shared-credential charging environments. Treat this as a high operational security issue, not a mass internet exploitation emergency based on the provided evidence.
Technical view
CVE-2021-34591 is a local privilege escalation in Bender/ebee CC612, CC613, ICC15xx, and ICC16xx controllers running 5.11.x, 5.12.x, 5.13.x, or 5.20.x. The CVE cites setuid applications including socat, ip, udhcpc, and ifplugd as the privilege path. It is mapped to CWE-250 and CVSS 3.1 score 7.8.
Likely exposure
Exposure is limited to organizations operating the listed Bender/ebee charge controller models and firmware versions. The attacker needs authenticated local access, so risk is highest where maintenance accounts, shell access, shared credentials, or weak operational controls exist.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. Exploitation is local and authenticated, but successful exploitation could provide root-level control over the device.
Researcher notes
Evidence is concise and does not include detailed fixed-version text in the supplied bundle. Validate exposure by model, firmware branch, and local access paths. Avoid assuming remote exploitability; the CVSS vector is local with low privileges required.
Mitigation direction
- Inventory Bender/ebee charge controllers and record model plus firmware version.
- Review VDE-2021-047 and vendor channels for supported firmware or mitigations.
- Restrict local and administrative access to trusted maintenance personnel only.
- Remove unused accounts and rotate shared or default operational credentials.
- Segment charge controller management access from general corporate networks.
Validation and detection
- Identify any CC612, CC613, ICC15xx, or ICC16xx devices in scope.
- Confirm whether firmware is 5.11.x, 5.12.x, 5.13.x, or 5.20.x.
- Check whether named setuid applications are present on affected devices.
- Review authentication and local access logs for unusual privileged activity.
- Confirm remediation status against vendor guidance before closing the finding.
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-250: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-34591 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.