Skip to main content

MBS Universal Gateway CVE-2026-35079

| EUVDEUVD-2026-34075 HIGH
External Control of File Name or Path (CWE-73)
2026-06-03 CERTVDE GHSA-9rf2-8ppr-jwp6
Information Disclosure Single A Double A Profibus Double A X Link Single X Double X Can Double X Dali Double X Knx Double X Lon Double X M Bus Double X Profinet Double X X Link Triple X Knx Dali Triple X Knx Lon Triple X Knx M Bus Triple X Profinet Dali Triple X Profinet Knx Triple X Profinet Lon Triple X Profinet M Bus
7.2
CVSS 4.0 · Vendor: CERTVDE
Share

Severity by source

Vendor (CERTVDE) PRIMARY
7.2 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from Vendor (CERTVDE) · only source for this CVE.

CVSS VectorVendor: CERTVDE

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Analysis Updated
Jun 03, 2026 - 13:35 vuln.today
v3 (cvss_changed)
Analysis Updated
Jun 03, 2026 - 13:35 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Jun 03, 2026 - 13:22 vuln.today
cvss_changed
CVSS changed
Jun 03, 2026 - 13:22 NVD
8.1 (HIGH) 7.2 (HIGH)
Analysis Generated
Jun 03, 2026 - 12:52 vuln.today

DescriptionCVE.org

The ugw-restore method allows a remote attacker with user privileges to delete arbitrary local files due to insufficient validation of user-controlled input.

AnalysisAI

Arbitrary file deletion in MBS Universal Gateway (UGW) products allows authenticated remote attackers with low-privilege user accounts to delete arbitrary files on the device by abusing the ugw-restore method, which fails to validate user-controlled path input. The vulnerability affects multiple MBS gateway variants (Single-A, Double-A Profibus/X-Link, Single-X, and Double-X CAN/DALI/KNX/LON/M-Bus/Profinet bridges) used in industrial fieldbus integration. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Reach gateway management interface over network
Delivery
Authenticate with low-privilege user credentials
Exploit
Invoke ugw-restore with traversal path
Execution
Gateway deletes targeted configuration or system files
Impact
Loss of fieldbus integrity and availability
Sign in to reveal

Vulnerability AssessmentAI

Exploitation The attacker must (a) have network reachability to the MBS gateway's management interface where the ugw-restore method is exposed and (b) hold valid low-privilege user credentials on the device (CVSS PR:L) - anonymous exploitation is not indicated. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) indicates network-reachable, low-complexity exploitation requiring only low-privilege authenticated access and no user interaction, with high impact to integrity and availability (VI:H/VA:H) and no confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained or been granted a low-privilege user account on an MBS gateway - for example a contractor account, a shared operator credential, or one harvested via phishing of a building-automation integrator - authenticates to the device's management interface over the network and invokes the ugw-restore method with a path-traversal payload that points at critical configuration, firmware, or system files. The device deletes the targeted files, which can corrupt gateway configuration, disable fieldbus communication, or render the unit unbootable, causing loss of automation control over connected Profibus, KNX, LON, DALI, M-Bus, or Profinet segments. …
Remediation Patch status is not enumerated in the supplied data - no vendor-released patched version is independently confirmed at time of analysis, so administrators must consult the CERT@VDE advisory at https://www.certvde.com/en/advisories/VDE-2026-039/ for the fixed firmware revision and apply it to each affected MBS gateway model in inventory. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

24 hours: Audit all MBS UGW deployments to identify affected models (Single-A, Double-A Profibus/X-Link, Single-X, Double-X CAN/DALI/KNX/LON/M-Bus/Profinet) and document installed firmware versions. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Single A

View all
CVE-2026-35075 CRITICAL
9.3 Jun 03

Credential disclosure in MBS industrial protocol gateways (Single-A, Double-A, Single-X, and Double-X product families)

CVE-2026-35082 HIGH
8.7 Jun 03

Path traversal in MBS industrial gateway products (Single-A, Double-A, Single-X, Double-X series) allows authenticated r
CVE-2026-35085 HIGH
8.7 Jun 03

Privilege escalation to root in MBS Single-A, Double-A, Single-X, and Double-X industrial gateway product lines allows a
CVE-2026-35084 HIGH
8.7 Jun 03

Privilege escalation to root via stack buffer overflow in dali-devconfig affects MBS gateway products including Single-A
CVE-2026-35083 HIGH
8.7 Jun 03

Privilege escalation to root in MBS industrial protocol gateways (Single-A, Double-A, Single-X, Double-X product lines c
CVE-2026-35080 HIGH
7.2 Jun 03

Arbitrary file deletion in MBS GmbH universal gateway (UGW) products allows authenticated remote users to remove files o
CVE-2026-35078 HIGH
7.2 Jun 03

Arbitrary file deletion in MBS Universal Gateway (UGW) product line allows authenticated remote attackers to delete loca
CVE-2026-35077 HIGH
7.2 Jun 03

Arbitrary file deletion in MBS Universal Gateway (UGW) product family allows authenticated remote attackers to remove an
CVE-2026-35076 HIGH
7.2 Jun 03

Arbitrary file deletion in MBS GmbH industrial gateway products (single-a, double-a, single-x, double-x variants across

CVE-2026-35081 HIGH
7.2 Jun 03

Privilege escalation / denial of service in MBS Universal Gateway (UGW) product family allows an authenticated low-privi

Same weakness CWE-73 – External Control of File Name or Path

View all
CVE-2025-33053 HIGH POC
8.8
CVE-2025-24054 MEDIUM POC
6.5
CVE-2025-0111 HIGH
7.1
CVE-2024-55372 CRITICAL POC
9.8
CVE-2024-55371 CRITICAL POC
9.8
CVE-2025-29709 CRITICAL POC
9.8
CVE-2025-29708 CRITICAL POC
9.8
CVE-2020-37080 CRITICAL POC
9.8

Same technique Information Disclosure

View all
CVE-2025-24813 CRITICAL POC
9.8
CVE-2015-1701 HIGH POC
7.8
CVE-2014-6324 HIGH POC
8.8
CVE-2017-0213 HIGH POC
7.3
CVE-2016-7255 HIGH POC
7.8
CVE-2010-0232 HIGH POC
7.8
CVE-2025-30066 HIGH POC
8.6
CVE-2025-54236 CRITICAL POC
9.1

Share

CVE-2026-35079 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy