ShineLan-X: Authentication Bypass by Spoofing
CVE-2025-36753 is a critical-severity authentication bypass by spoofing vulnerability in ShineLan-X from Growatt, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected ShineLan-X versions: 3.6.0.0 through 3.6.0.2. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.34% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update Shine Lan-x Firmware to 3.6.0.2 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Growatt | ShineLan-X | 3.6.0.0 through 3.6.0.2 | Not stated |
| Growatt | Shine Lan-x Firmware | 3.6.0.0 up to, but not including, 3.6.0.2 | 3.6.0.2 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.6 | High | CNA (divd.nl) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
The SWD debug interface on the Growatt ShineLan-X communication dongle is available by default, allowing an attacker to attain debug access to the device and to extracting secrets or domains from within the device
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
More Authentication Bypass by Spoofing vulnerabilities (CWE-290)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- csirt.divd.nl/CVE-2025-36753/Third Party Advisory
Other vulnerabilities in ShineLan-X
- 9.3 Critical severity
- 9.8 Critical severity
- 9.4 Critical severity
- 9.8 Critical severity
Recent Authentication Bypass by Spoofing vulnerabilities
- 7.5 High severity
- 9.3 Critical severity
- 7.5 High severity
- 7.5 High severity
- 9.8 Critical severity
- 7.8 High severity
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