CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7	$0-$5k	0.14

A vulnerability was found in Deye/Revolt/Bosswerk Inverter MW3_15U_5406_1.47/MW3_15U_5406_1.471. It has been rated as problematic. This issue affects an unknown part of the component Access Point Setting Handler. The manipulation with the input value 12345678 leads to a hard-coded password vulnerability. Using CWE to declare the problem leads to CWE-259. The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components. Impacted is confidentiality, integrity, and availability.

The weakness was shared 02/13/2023 by Jan Mahn as Balkonkraftwerke: Sicherheitslücke in Mikrowechselrichtern von Deye as confirmed article (Heise). The advisory is shared at heise.de. The vendor cooperated in the coordination of the public release. The article contains:

Als Nutzer verbindet man sich mit einem Access-Point, den der Wechselrichter aufspannt und nutzt dafür den Schlüssel 12345678. In der Weboberfläche trägt man die Zugangsdaten zum eigenen WLAN ein und schaltet den Access-Point dann ab oder ändert dessen Schlüssel. Dieser Zugang wird ja nicht mehr gebraucht, weil sich das Gerät fortan mit dem WLAN verbinden soll. Das Problem: Der Speichern-Button ist ohne Funktion, der Wechselrichter schließt den Access-Point nicht und auch 12345678 als Schlüssel lässt sich nicht ändern.

The identification of this vulnerability is CVE-2023-0808. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1078.001 for this issue.

The exploit is available at heise.de. It is declared as proof-of-concept.

Upgrading to version MW3_16U_5406_1.53 eliminates this vulnerability.

Productinfo

Vendor

• Bosswerk
• Deye
• Revolt

Name

• Inverter

Version

• MW3_15U_5406_1.47
• MW3_15U_5406_1.471

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.9
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CNA Base Score: 3.9
CNA Vector (VulDB): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Hard-coded password
CWE: CWE-259 / CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Inverter MW3_16U_5406_1.53

Timelineinfo

02/13/2023 🔍
02/13/2023 +0 days 🔍
02/13/2023 +0 days 🔍
03/10/2023 +25 days 🔍

Sourcesinfo

Advisory: Balkonkraftwerke: Sicherheitslücke in Mikrowechselrichtern von Deye
Researcher: Jan Mahn
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2023-0808 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/13/2023 12:03 PM
Updated: 03/10/2023 09:50 PM
Changes: 02/13/2023 12:03 PM (44), 02/13/2023 12:05 PM (6), 03/10/2023 09:37 PM (2), 03/10/2023 09:50 PM (28)
Complete: 🔍
Cache ID: 34:F36:40

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