CVE-2025-40946
HighCVSS 8.3Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
Inverters and energy storage devices in the blueplanet family (including 100 NX3 M8, 100 TL3 GEN2, 105 TL3, 125 NX3 M10, gridsave) use a CRC16-based algorithm to generate Technical Service credentials. An attacker can derive these credentials from the device serial number and gain unauthorized access.
Risk Assessment
Anyone who knows the device serial number can compute the service credentials and take control of the inverter or energy storage unit, potentially disrupting the installation and grid security.
Recommendation
Update blueplanet device firmware to at least V3.92 (TL3 series), V6.1.4.9 (TL3 GEN2 series) or V3.91 (gridsave series) and restrict network access to service interfaces.
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Original NVD description (English source)
A vulnerability has been identified in blueplanet 100 NX3 M8 (All versions), blueplanet 100 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 105 TL3 (All versions < V3.92), blueplanet 105 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 110 TL3 (All versions < V3.92), blueplanet 125 NX3 M10 (All versions), blueplanet 125 TL3 (All versions < V3.92), blueplanet 125 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 137 TL3 (All versions < V3.92), blueplanet 150 TL3 (All versions < V3.92), blueplanet 150 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 155 TL3 (All versions < V3.92), blueplanet 155 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 165 TL3 (All versions < V3.92), blueplanet 165 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 3.0 TL3-60.0 TL3 (All versions), blueplanet 87.0 TL3 (All versions < V3.92), blueplanet 87.0 TL3 GEN2 (All versions < V6.1.4.9), blueplanet 92.0 TL3 (All versions < V3.92), blueplanet 92.0 TL3 GEN2 (All versions < V6.1.4.9), blueplanet gridsave 110 TL3-S (All versions < V3.91), blueplanet gridsave 137 TL3-S (All versions < V3.91), blueplanet gridsave 92.0 TL3-S (All versions < V3.91). A CRC16-based algorithm for generating Technical Service credentials could allow an attacker to derive the credentials from the devices serial number and misuse them to gain unauthorized access.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

