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CVE-2024-45274· NVD / CVE Program· CNA CERTVDE

MB connect line/Helmholz: Remote code execution via confnet service

An unauthenticated remote attacker can execute OS commands via UDP on the device due to missing authentication.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded
Published
Oct 15, 2024
Updated
Jun 17, 2026
EPSS
1.5% · 74th percentile
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Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · CERTVDE
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
mbconnectlinembnet.mini firmware
mbconnectlinembnet.mini
helmholzrex 100 firmware
helmholzrex 100

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • helmholz rex 100 firmwarebefore 2.3.1
  • mbconnectline mbnet.mini firmwarebefore 2.3.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (CERTVDE). Independent of NVD's CPE analysis and usually ahead of it.

  • Helmholz REX100

    • 0.0.0 and later · up to and including 2.2.13affected · semver

  • MB connect line mbNET.mini

    • 0.0.0 and later · up to and including 2.2.13affected · semver

Same product

mbconnectline: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-45275MB connect line/Helmholz: Hardcoded user accounts with hard-coded passwords
    39Monitor
  • CVE-2024-45273MB connect line/Helmholz: Weak encryption of configuration file
    31Monitor
  • CVE-2024-45271MB connect line/Helmholz: Remote code execution due to improper input validation
    31Monitor
  • CVE-2025-41679Unauthenticated Buffer Overflow in Conftool Service Leading to Denial of Service
    30Monitor
  • CVE-2024-45276MB connect line/Helmholz: tmp directory exposed via webservice
    30Monitor
  • CVE-2025-41678SQL Injection via POST Requests Allowing Configuration Database Manipulation
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-452760 days apartMB connect line/Helmholz: tmp directory exposed via webservice
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2024-452710 days apartMB connect line/Helmholz: Remote code execution due to improper input validation
    31Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
// Added for the support teamapp.post("/maintenance/reset", resetDevice);

Fixed

ts
if (config.maintenanceEnabled) {  app.post(    "/maintenance/reset",    requireSession, requireRole("admin"), resetDevice  );}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records