SunPower PVS6
Plan Patch9.6ICS-CERT ICSA-25-245-03Sep 2, 2025
Attack VectorAdjacent
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
SunPower PVS6 solar inverter monitoring system contains a hardcoded credentials vulnerability (CWE-798) that allows attackers with network access to gain full device access. Successful exploitation enables firmware replacement, settings modification, device disabling, SSH tunnel creation, and manipulation of attached solar inverter devices.
What this means
What could happen
An attacker with network access to the PVS6 could gain full control of the solar inverter monitoring system, potentially disabling solar generation, altering energy output monitoring, or using the device as a pivot point to attack connected inverters and the broader power generation infrastructure.
Who's at risk
Solar power facilities and distributed renewable energy installations that rely on SunPower PVS6 monitoring systems for inverter management and grid-tie operations. This affects any utility, municipality, or commercial solar operator using PVS6 to monitor and control solar inverter arrays.
How it could be exploited
An attacker on the same network segment as the PVS6 (or with routed access through a compromised internal network) can connect to the device and authenticate using hardcoded credentials embedded in the firmware. Once authenticated, the attacker can modify device settings, replace firmware, disable operation, or establish reverse SSH tunnels for persistent access and lateral movement to downstream inverter devices.
Prerequisites
- Network access to PVS6 device (same subnet or routed internal network path)
- No valid user credentials required—hardcoded credentials embedded in firmware are sufficient
no authentication requiredhardcoded credentials (CWE-798)no patch availableaffects renewable energy critical infrastructureallows complete device takeover
Exploitability
Low exploit probability (EPSS 0.0%)
Affected products (1)
ProductAffected VersionsFix Status
PVS6: <=2025.06_build_61839≤ 2025.06 build 61839No fix (EOL)
Remediation & Mitigation
0/6
Do now
0/4HARDENINGIsolate PVS6 device on a separate management network segment inaccessible from business networks and the internet
HARDENINGImplement firewall rules to restrict network access to PVS6 to only authorized engineering workstations and control systems on a dedicated management subnet
HARDENINGDeploy network segmentation to prevent lateral movement from PVS6 to downstream inverter devices and other critical systems
WORKAROUNDIf remote access is required, implement a VPN with strong authentication and encryption to secure connections to PVS6
Schedule — requires maintenance window
0/2Patching may require device reboot — plan for process interruption
HARDENINGMonitor PVS6 for unauthorized configuration changes, firmware modifications, and unusual SSH activity
HOTFIXContact SunPower to determine if a security update or replacement device is available
CVEs (1)
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