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CVE-2026-27815

MEDIUM CVSS 4.0: 5.5 EPSS 0.04%
Updated Mar 31, 2026
Everest
Parameter Value
CVSS 5.5 (MEDIUM)
Affected Versions before 2026.02.0
Fixed In 2026.02.0
Type CWE-787 (Out-of-bounds Write)
Vendor Everest
Public PoC No

EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_session_setup copies a variable-length payment_options list into a fixed-size array of length 2 without bounds checking. With schema validation disabled by default, oversized MQTT Cmd payloads can trigger out-of-bounds writes and corrupt adjacent EVSE state or crash the process.

Version 2026.02.0 contains a patch.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Linuxfoundation Everest
cpe:2.3:o:linuxfoundation:everest:*:*:*:*:*:*:*:*
2026.02.0