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TI-2026-69151 Aliases CVE-2026-107194GHSA-8f9m-p66m-hj4m

Authentication bypass in Sungrow iSolarCloud enables account takeover

Priority MEDIUM 48CWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

Sungrow iSolarCloud before 2026-08-25 has an authentication bypass in its login process. A crafted login_type value in a login request lets a remote attacker skip authentication, a flaw classified as CWE-288. An unauthenticated attacker can take over user accounts, which the source says could potentially lead to local blackouts across the whole continent in Europe.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Sungrow iSolarCloud before 2026-08-25 allows authentication bypass and account takeover via "login_type":"5" in a login request, potentially leading to "local blackouts on the whole continent" in Europe. An email address for the user_account property is required; however, a user can view the email address associated with their parent organization.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00447 39th percentileScored 2026-11-07
Fix Fixed iSolarCloud (Sungrow): 2026-08-25

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
SunGrowiSolarCloudbefore 2026-08-252026-08-25Patch availableCNA
  • iSolarCloud VendorSunGrow Affected before 2026-08-25 Fixed in 2026-08-25 Patch available CNA

Remediation

Update Sungrow iSolarCloud to 2026-08-25 or later, the fixed version listed for the product.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA iSolarCloud (Sungrow) Fixed in 2026-08-25

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-107194
  2. 2026-10-07 Alias added: GHSA-8f9m-p66m-hj4m
  3. 2026-10-10 CISA SSVC decision points changed
  4. 2026-10-19 Title updated · CNA
  5. 2026-10-19 Fix available: Sungrow/iSolarCloud@2026-08-25 · CNA

References

Other 2

  • TI-2025-04049 SunGrow Logger1000 weak password CVSS 4.0MEDIUM 6.3
  • 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