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TI-2025-04049 Aliases CVE-2025-4534GHSA-w886-q54p-h4w2

SunGrow Logger1000 weak password

Priority MEDIUM 61CWE-521Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-521.

Summary

A vulnerability, which was classified as problematic, has been found in SunGrow Logger1000 01_A. This issue affects some unknown processing. The manipulation leads to weak password requirements. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00429 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SunGrowLogger100001_A—No fix listedCNA
  • Logger1000 VendorSunGrow Affected 01_A Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-4534
  2. 2026-10-03 Alias added: GHSA-w886-q54p-h4w2

References

Exploit 1

  • TI-2026-69151 Authentication bypass in Sungrow iSolarCloud enables account takeover CVSS 4.0CRITICAL 9.2
  • TI-2025-21177 MQTT implementation in Sungrow iSolarCloud allowed users to subscribe to all data of all connected inverters CVSS 4.0HIGH 8.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences