MBS UBR-01 Mk II/UBR-02/UBR-LON prior 6.0.1.0 failing open

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in MBS UBR-01 Mk II, UBR-02 and UBR-LON. This vulnerability affects unknown code. Performing a manipulation results in failing open. This vulnerability was named CVE-2025-41759. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in MBS UBR-01 Mk II, UBR-02 and UBR-LON. This affects some unknown processing. The manipulation with an unknown input leads to a failing open vulnerability. CWE is classifying the issue as CWE-636. When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions. This is going to have an impact on confidentiality. The summary by CVE is:

An administrator may attempt to block all networks by specifying "\*" or "all" as the network identifier. However, these values are not supported and do not trigger any validation error. Instead, they are silently interpreted as network 0 which results in no networks being blocked at all.

The weakness was presented by Adrien Rey as mbs-2025-0001. It is possible to read the advisory at mbs-solutions.de. This vulnerability is uniquely identified as CVE-2025-41759 since 04/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 6.0.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-208365). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.9
CNA Vector (CERTVDE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Failing open
CWE: CWE-636
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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: UBR-01 Mk II/UBR-02/UBR-LON 6.0.1.0

Timelineinfo

04/16/2025 CVE reserved
03/09/2026 +327 days Advisory disclosed
03/09/2026 +0 days VulDB entry created
03/12/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: mbs-2025-0001
Researcher: Adrien Rey
Status: Confirmed

CVE: CVE-2025-41759 (🔒)
GCVE (CVE): GCVE-0-2025-41759
GCVE (VulDB): GCVE-100-349803
EUVD: 🔒

Entryinfo

Created: 03/09/2026 12:11
Updated: 03/12/2026 20:39
Changes: 03/09/2026 12:11 (63), 03/09/2026 13:35 (1), 03/12/2026 20:39 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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