MBS UBR-01 Mk II/UBR-02/UBR-LON prior 6.0.1.0 API Endpoint wwwubr.cgi inclusion of undocumented features or chicken bits

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in MBS UBR-01 Mk II, UBR-02 and UBR-LON and classified as problematic. This affects an unknown function of the file wwwubr.cgi of the component API Endpoint. Such manipulation leads to inclusion of undocumented features or chicken bits. This vulnerability is listed as CVE-2025-41754. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in MBS UBR-01 Mk II, UBR-02 and UBR-LON and classified as problematic. Affected by this issue is an unknown code of the file wwwubr.cgi of the component API Endpoint. The manipulation with an unknown input leads to a inclusion of undocumented features or chicken bits vulnerability. Using CWE to declare the problem leads to CWE-1242. The device includes chicken bits or undocumented features that can create entry points for unauthorized actors. Impacted is confidentiality. CVE summarizes:

A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API endpoint to read arbitrary files on the system.

The weakness was presented by Adrien Rey as mbs-2025-0001. The advisory is shared for download at mbs-solutions.de. This vulnerability is handled as CVE-2025-41754 since 04/16/2025. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

Upgrading to version 6.0.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-208355). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (CERTVDE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Inclusion of undocumented features or chicken bits
CWE: CWE-1242 / CWE-912
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-2025-41754 (🔒)
GCVE (CVE): GCVE-0-2025-41754
GCVE (VulDB): GCVE-100-349808
EUVD: 🔒

Entryinfo

Created: 03/09/2026 12:22
Updated: 03/12/2026 20:39
Changes: 03/09/2026 12:22 (65), 03/09/2026 14:32 (1), 03/12/2026 20:39 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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