Security readout for executives and security teams
Plain-English summary
This flaw means a charging station backend may trust a WebSocket connection without proving the charger is real. An attacker who knows or discovers a charger identifier could impersonate that charger, influence backend data, and potentially affect charging operations. Treat this as urgent for organizations using SWITCH EV swtchenergy.com-connected infrastructure.
Executive priority
Prioritize this for immediate assessment if SWITCH EV manages charging operations for your organization. The issue affects authentication at a critical trust boundary and could impact operational integrity, customer experience, and charging data reliability.
Technical view
CVE-2026-27767 is a CWE-306 missing authentication issue in SWITCH EV swtchenergy.com OCPP WebSocket endpoints. The record lists all versions affected and CVSS 3.1 score 9.4. Unauthenticated network access may allow station impersonation, unauthorized OCPP command handling, privilege escalation, and backend data corruption.
Likely exposure
Exposure is most relevant where SWITCH EV swtchenergy.com OCPP WebSocket endpoints are reachable by untrusted networks or the internet. The source bundle does not provide deployment-specific indicators, endpoint names, or compensating controls.
Exploitation context
The CVE description states exploitation requires no authentication, no user interaction, and low attack complexity. CISA KEV status is false in the provided data, and no provided source states active exploitation in the wild.
Researcher notes
Provided evidence identifies missing authentication on OCPP WebSocket endpoints but does not include a patch version, workaround details, or proof of exploitation. Avoid assuming all SWITCH EV services are exposed; validate actual architecture and vendor guidance.
Mitigation direction
- Check SWITCH EV and CISA advisory guidance for vendor-approved remediation.
- Restrict OCPP WebSocket access to trusted network paths where operationally feasible.
- Require strong charger identity verification if supported by the platform.
- Review charging network segmentation and exposure to the public internet.
- Monitor for unexpected station identifiers or abnormal OCPP activity.
Validation and detection
- Inventory use of SWITCH EV swtchenergy.com charging infrastructure.
- Identify whether OCPP WebSocket services are externally reachable.
- Confirm whether charger connections require authentication beyond station identifier.
- Review logs for unfamiliar station identifiers or unusual command patterns.
- Track vendor advisories for patch, configuration, or platform update instructions.
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-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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-2026-27767 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
- 9.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
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:H/A:L3.95.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.4CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Source materials
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.