MBS Single-A prior 6_0_0_7 Firmware Image default password

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in MBS Single-A, Double-A Profibus, Double-A x-link, Single-X, Double-X CAN, Double-X DALI, Double-X KNX, Double-X LON, Double-X M-Bus, Double-X PROFINET, Double-X x-link, Triple-X KNX+DALI, Triple-X KNX+LON, Triple-X KNX+M-Bus, Triple-X PROFINET+DALI, Triple-X PROFINET+KNX, Triple-X PROFINET+LON and Triple-X PROFINET+M-Bus. It has been declared as very critical. This issue affects some unknown processing of the component Firmware Image Handler. Such manipulation leads to default password. This vulnerability is listed as CVE-2026-35075. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MBS Single-A, Double-A Profibus, Double-A x-link, Single-X, Double-X CAN, Double-X DALI, Double-X KNX, Double-X LON, Double-X M-Bus, Double-X PROFINET, Double-X x-link, Triple-X KNX+DALI, Triple-X KNX+LON, Triple-X KNX+M-Bus, Triple-X PROFINET+DALI, Triple-X PROFINET+KNX, Triple-X PROFINET+LON and Triple-X PROFINET+M-Bus. It has been rated as very critical. Affected by this issue is some unknown processing of the component Firmware Image Handler. The manipulation with an unknown input leads to a default password vulnerability. Using CWE to declare the problem leads to CWE-1393. The product uses default passwords for potentially critical functionality. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An unauthenticated remote attacker can recover a default, hard coded password from a firmware image and thus gain full access to all affected devices.

The weakness was presented by Adrien Rey as VDE-2026-039. The advisory is shared for download at certvde.com. This vulnerability is handled as CVE-2026-35075 since 04/01/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/03/2026).

Upgrading to version 6_0_0_7 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (CERTVDE): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Default password
CWE: CWE-1393
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Single-A/Double-A Profibus/Double-A x-link/Single-X/Double-X CAN/Double-X DALI/Double-X KNX/Double-X LON/Double-X M-Bus/Double-X PROFINET/Double-X x-link/Triple-X KNX+DALI/Triple-X KNX+LON/Triple-X KNX+M-Bus/Triple-X PROFINET+DALI/Triple-X PROFINET+KNX/Triple-X PROFINET+LON/Triple-X PROFINET+M-Bus 6_0_0_7

Timelineinfo

04/01/2026 CVE reserved
06/03/2026 +63 days Advisory disclosed
06/03/2026 +0 days VulDB entry created
06/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: VDE-2026-039
Researcher: Adrien Rey
Status: Confirmed

CVE: CVE-2026-35075 (🔒)
GCVE (CVE): GCVE-0-2026-35075
GCVE (VulDB): GCVE-100-368108

Entryinfo

Created: 06/03/2026 16:02
Changes: 06/03/2026 16:02 (76)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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