MBS UBR-01 Mk II/UBR-02/UBR-LON prior 6.0.1.0 Password wwwdnload.cgi weak hash

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in MBS UBR-01 Mk II, UBR-02 and UBR-LON. This issue affects some unknown processing of the file wwwdnload.cgi of the component Password Handler. Executing a manipulation can lead to weak hash. The identification of this vulnerability is CVE-2025-41762. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in MBS UBR-01 Mk II, UBR-02 and UBR-LON. This vulnerability affects an unknown function of the file wwwdnload.cgi of the component Password Handler. The manipulation with an unknown input leads to a weak hash vulnerability. The CWE definition for the vulnerability is CWE-328. The product uses an algorithm that produces a digest (output value) that does not meet security expectations for a hash function that allows an adversary to reasonably determine the original input (preimage attack), find another input that can produce the same hash (2nd preimage attack), or find multiple inputs that evaluate to the same hash (birthday attack). As an impact it is known to affect confidentiality. CVE summarizes:

An unauthenticated attacker can abuse the weak hash of the backup generated by the wwwdnload.cgi endpoint to gain unauthorized access to sensitive data, including password hashes and certificates.

The weakness was shared by Adrien Rey as mbs-2025-0001. The advisory is shared for download at mbs-solutions.de. This vulnerability was named CVE-2025-41762 since 04/16/2025. The exploitation appears to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version 6.0.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-208371). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.2
CNA Vector (CERTVDE): 🔒

CVSSv2info

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

Exploitinginfo

Class: Weak hash
CWE: CWE-328 / CWE-327 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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-2025-41762 (🔒)
GCVE (CVE): GCVE-0-2025-41762
GCVE (VulDB): GCVE-100-349804
EUVD: 🔒

Entryinfo

Created: 03/09/2026 12:21
Updated: 03/12/2026 20:39
Changes: 03/09/2026 12:21 (65), 03/09/2026 13:27 (1), 03/12/2026 20:39 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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