CVE-2026-35079Network attack vector

Authenticated file deletion via unvalidated restore paths

Published Jun 3, 2026 · Updated Jun 3, 2026

External control of file names in MBS Universal Gateway firmware before V6_0_0_7 allows remote authenticated users to delete local files. The ugw-restore method accepts a user-controlled file name or path without sufficient validation and uses it for deletion. User-level access to the gateway web interface is required, and selected local files can be removed without user interaction.

CVSS severity7.2
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

External control of file names in MBS Universal Gateway firmware before V6_0_0_7 allows remote authenticated users to delete local files. The ugw-restore method accepts a user-controlled file name or path without sufficient validation and uses it for deletion. User-level access to the gateway web interface is required, and selected local files can be removed without user interaction.

The record

CVE
CVE-2026-35079
Published
Jun 3, 2026
Updated
Jun 3, 2026
Vendor
MBS GmbH
Product
Double-A PROFIBUS
Classifications
CWE-73, T1070.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V1_0_0_0 <V6_0_0_7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MBS GmbH · Double-A PROFIBUSversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Single-Xversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Single-Aversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X x-linkversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X PROFINET + LONversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X PROFINET + KNXversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X KNXversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-A x-linkversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X KNX + M-Busversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X PROFINETversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X KNX + DALIversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X DALIversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X CANversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X PROFINET + M-Busversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X PROFINET + DALIversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X LONversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Double-X M-Busversion=V1_0_0_0 <V6_0_0_7
MBS GmbH · Triple-X KNX + LONversion=V1_0_0_0 <V6_0_0_7

Published CVSS scores

8.1CERT VDECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.2CERT VDECVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1070.004File Deletion

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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