CVE-2026-27770: Charging Station Information Disclosure

CVE-2026-27770 Overview

CVE-2026-27770 is an information exposure vulnerability affecting electric vehicle (EV) charging station infrastructure where authentication identifiers are publicly accessible via web-based mapping platforms. This vulnerability (CWE-522: Insufficiently Protected Credentials) allows unauthenticated attackers to harvest sensitive authentication data that could be leveraged to impersonate legitimate charging stations or conduct further attacks against the charging network infrastructure.

Critical Impact

Publicly exposed authentication identifiers in EV charging infrastructure could enable attackers to clone station identities, intercept charging sessions, or manipulate billing systems, potentially affecting both operators and end users of electric vehicle charging networks.

Affected Products

• Electric vehicle charging station systems using web-based mapping platforms
• Charging station management systems with exposed authentication endpoints
• EV infrastructure utilizing publicly accessible station identifiers

Discovery Timeline

• 2026-03-06 - CVE-2026-27770 published to NVD
• 2026-03-09 - Last updated in NVD database

Technical Details for CVE-2026-27770

Vulnerability Analysis

This vulnerability stems from insufficient protection of credentials (CWE-522) within EV charging station infrastructure. The core issue involves authentication identifiers being inadvertently exposed through web-based mapping platforms that display charging station information publicly. These identifiers, which should remain protected, can be harvested by malicious actors through the publicly accessible mapping interfaces without requiring any authentication or special access.

The exposure mechanism leverages the network-accessible nature of the mapping platforms, requiring no user interaction and no special privileges for exploitation. This enables attackers to systematically enumerate and collect authentication identifiers across multiple charging stations, potentially affecting entire charging networks.

Root Cause

The root cause of CVE-2026-27770 lies in improper access controls and insufficient protection of sensitive authentication credentials. The design flaw exposes station authentication identifiers through public-facing mapping interfaces that were likely intended only for location and availability information. This architectural oversight allows authentication data to be accessed alongside non-sensitive station metadata without implementing appropriate access restrictions or data segregation.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no authentication and involving no user interaction. An attacker can exploit this vulnerability by:

1. Accessing public web-based mapping platforms that display charging station information
2. Enumerating station entries to identify exposed authentication identifiers
3. Harvesting the authentication credentials for use in subsequent attacks
4. Potentially impersonating legitimate charging stations or manipulating charging sessions

The vulnerability is exploitable remotely with low attack complexity, making it accessible to a wide range of threat actors. Technical details and additional guidance can be found in the CISA ICS Advisory #ICSA-26-062-07.

Detection Methods for CVE-2026-27770

Indicators of Compromise

• Unusual access patterns to mapping platform APIs that enumerate multiple station identifiers
• Requests specifically targeting authentication identifier fields in station data
• Bulk data extraction attempts from charging station mapping services
• Authentication attempts using identifiers that match exposed patterns from mapping platforms

Detection Strategies

• Monitor API access logs for abnormal query patterns targeting station authentication data
• Implement rate limiting and anomaly detection on mapping platform endpoints
• Review access logs for enumeration attempts across multiple charging stations
• Deploy web application firewalls (WAF) with rules to detect credential harvesting behavior

Monitoring Recommendations

• Enable comprehensive logging on all mapping platform and charging station management interfaces
• Establish baseline usage patterns for legitimate API consumers to identify anomalous activity
• Monitor for unauthorized authentication attempts using known exposed identifiers
• Implement alerting for bulk data access requests to station information endpoints

How to Mitigate CVE-2026-27770

Immediate Actions Required

• Audit all public-facing mapping platforms and APIs for exposed authentication identifiers
• Remove or encrypt authentication identifiers from publicly accessible station data
• Implement proper access controls segregating sensitive authentication data from public station information
• Rotate any authentication credentials that may have been exposed

Patch Information

Organizations should consult the ePower Support Portal for vendor-specific guidance and patches. Additional technical details and mitigation recommendations are available in the CISA ICS Advisory #ICSA-26-062-07 and the associated GitHub CSAF Document.

Workarounds

• Implement network segmentation to isolate charging station management systems from public-facing mapping services
• Deploy API gateways that filter sensitive authentication fields from public responses
• Use tokenized or hashed identifiers in public-facing systems instead of raw authentication credentials
• Enable multi-factor authentication for charging station management operations to reduce impact of exposed credentials