Security readout for executives and security teams
Plain-English summary
CVE-2026-20791 reports that charging station authentication identifiers are publicly accessible through web-based mapping platforms associated with Chargemap. This could expose identifiers intended to control or authenticate charging-station activity. The issue is rated medium in the source bundle, with no CISA KEV listing or cited evidence of active exploitation.
Executive priority
Treat this as a moderate operational and fraud-risk issue for EV charging environments. Prioritize asset inventory and vendor confirmation over emergency response unless your organization depends on Chargemap-exposed identifiers for authentication or billing-sensitive workflows.
Technical view
The issue is classified as CWE-522, insufficiently protected credentials, affecting Chargemap chargemap.com per the provided record. CVSS 4.0 score is 6.9: network-accessible, low complexity, no privileges, no user interaction, with low confidentiality and integrity impact and no availability impact. Source data says “All versions,” but also shows an inconsistent default status of “unaffected.”
Likely exposure
Exposure is most relevant to organizations operating, managing, or relying on EV charging stations represented in Chargemap or related public mapping platforms. Risk depends on whether publicly visible identifiers can be used against real charging infrastructure or business workflows.
Exploitation context
No active exploitation is supported by the provided sources, and the CVE is not listed as CISA KEV. The described weakness is public exposure of authentication identifiers, which may enable misuse if those identifiers are accepted by charging systems or backend services.
Researcher notes
Evidence is limited to the CVE/CISA source bundle. No patch, workaround, or exploitation evidence is provided here. The affected-status data is inconsistent, listing Chargemap “All versions” while also showing defaultStatus “unaffected,” so validation against CISA and vendor guidance is important.
Mitigation direction
- Review the CISA advisory and Chargemap support guidance for official remediation details.
- Identify whether your charging assets are listed on Chargemap or related public mapping platforms.
- Ask Chargemap or station providers whether exposed identifiers can be revoked, rotated, or restricted.
- Limit trust in publicly visible identifiers for authentication decisions.
- Monitor charging activity and account records for unexpected sessions or changes.
Validation and detection
- Confirm whether organizational charging stations appear in Chargemap public mapping data.
- Check whether any visible station identifiers are used for authentication or authorization.
- Compare asset exposure against the CISA advisory details.
- Verify vendor guidance before changing production charging-station configurations.
- Document affected stations, providers, identifiers, and remediation status.
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-522: 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-2026-20791 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
- Medium
- CVSS
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
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.
Insufficiently Protected Credentials
Insufficiently Protected Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.