Security readout for executives and security teams
Plain-English summary
CVE-2026-27772 is a critical authentication failure in EV Energy ev.energy. Reported WebSocket/OCPP endpoints may allow someone without credentials to impersonate a charging station and exchange commands as if legitimate. Business risk centers on unauthorized charger control, unreliable operational data, and potential disruption to charging services.
Executive priority
Prioritize within normal emergency vulnerability handling for exposed charging operations. The issue is critical because it can affect control and trust in charging infrastructure data, but the provided sources do not confirm active exploitation or name a patch.
Technical view
The issue is CWE-306: missing authentication for a critical function. The CVE states unauthenticated attackers can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands. CVSS is 9.4, network-accessible, low complexity, no privileges, no user interaction.
Likely exposure
Potentially exposed organizations are those using EV Energy ev.energy where OCPP WebSocket endpoints are reachable. The bundle lists “All versions,” but also includes a conflicting defaultStatus of “unaffected.” Treat exposure as requiring confirmation against the CISA advisory and vendor guidance.
Exploitation context
The provided sources support theoretical unauthenticated network exploitation, but do not state active exploitation. The CVE is not marked KEV in the bundle. Successful abuse requires knowledge or discovery of a charging station identifier, according to the description.
Researcher notes
Evidence is limited to the CVE record, CISA advisory references, and vendor site. No exploit status, patch version, or definitive workaround is included in the bundle. The affected-version metadata is internally inconsistent, so verify with authoritative advisory text before broad remediation claims.
Mitigation direction
- Check EV Energy and CISA guidance for official fixes or mitigations.
- Inventory ev.energy deployments and identify exposed OCPP WebSocket endpoints.
- Confirm authentication is enforced before accepting station messages or commands.
- Limit endpoint reachability where operationally feasible until vendor guidance is applied.
- Monitor for unexpected station identifiers, command activity, or data anomalies.
Validation and detection
- Confirm whether ev.energy is deployed in your charging infrastructure.
- Review configurations for OCPP WebSocket authentication requirements.
- Compare deployed versions and settings with CISA and vendor advisories.
- Check logs for unknown station identifiers or abnormal OCPP activity.
- Document compensating controls if no vendor fix is available yet.
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-2026-27772 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
- CVE List V5 sourceCVE List V5
- https://www.ev.energy/en-usCVE reference
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-07CVE reference
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-07.jsonCVE 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.
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.