Security readout for executives and security teams
Plain-English summary
CVE-2026-22540 can make affected EFACEC EV chargers stop functioning by overwhelming an internal control board with ARP traffic. For organizations operating QC60/90/120 chargers on version 8, the business impact is service outage, charging disruption, and operational support burden. No public source provided confirms active exploitation.
Executive priority
Treat as high operational priority for EV charging environments using affected EFACEC chargers. Prioritize asset identification, network segmentation review, and vendor remediation tracking. Urgency is driven by critical availability impact, not by confirmed active exploitation.
Technical view
The CVE describes uncontrolled resource consumption via massive ARP requests, mapped to CWE-400. Affected product is EFACEC QC60/90/120 version 8. CVSS v4.0 is 9.2 critical, with network attack vector, low complexity, no privileges, no user interaction, and high availability impact on the vulnerable system and subsequent system.
Likely exposure
Exposure is most relevant where affected chargers or their management/control networks can receive ARP traffic from untrusted or poorly segmented local network segments. The source data lists default status as unaffected except EFACEC QC60/90/120 version 8.
Exploitation context
The vulnerability is a denial-of-service condition, not described as code execution or data theft. The provided sources do not include exploit details, proof-of-concept status, observed attacks, or a named patch. It is not listed as CISA KEV in the provided bundle.
Researcher notes
Evidence is limited to the CVE record and referenced vendor/security page. No detailed advisory, packet thresholds, affected board identifiers, fixed versions, or exploit observations are included in the provided sources. Avoid assuming broader EFACEC product impact beyond QC60/90/120 version 8.
Mitigation direction
- Identify EFACEC QC60/90/120 chargers and confirm whether version 8 is installed.
- Check EFACEC or Thales guidance for updates, patches, or compensating controls.
- Restrict charger network access to trusted management and operational segments.
- Monitor for abnormal ARP volume near charger networks.
- Apply network segmentation to limit local broadcast-domain exposure.
Validation and detection
- Inventory charger models and firmware/software versions.
- Confirm whether any QC60/90/120 units run version 8.
- Review network design for untrusted devices sharing charger broadcast domains.
- Check monitoring for ARP spikes or charger availability events.
- Track vendor advisories for confirmed remediation guidance.
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-400: 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 lookupCVE-2026-22540 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
- Critical
- CVSS
- 9.2 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA: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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.2CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Source materials
- CVE List V5 sourceCVE List V5
- https://cds.thalesgroup.com/enCVE reference
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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.