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NVD / CVE Program· CNA CERTVDE

CVE-2026-35076: Arbitrary file delete vulnerability in method bac-scanresult

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: MBS Double-A Profibus V6_00_07; MBS Double-A x-link V6_00_07; MBS Double-X CAN V6_00_07.

Low priority for now. Upgrade to MBS Double-A Profibus V6_00_07; MBS Double-A x-link V6_00_07; MBS Double-X CAN V6_00_07 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

HighCVSS 7.2 · v4.0—No exploit Fix available
Published
Jun 3, 2026
Updated
Jul 22, 2026
EPSS
0.3% · 30th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · CERTVDE
7.2
NVD has not scored this yet; the score shown is the CNA’s.

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

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

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-35076

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mbs-solutionsuniversal gateway firmware
mbs-solutionsdouble-a profibus
mbs-solutionsdouble-a x-link
mbs-solutionsdouble-x can
mbs-solutionsdouble-x dali
mbs-solutionsdouble-x knx
mbs-solutionsdouble-x lon
mbs-solutionsdouble-x m-bus
mbs-solutionsdouble-x profinet
mbs-solutionsdouble-x x-link
mbs-solutionssingle-a
mbs-solutionssingle-x

and 7 more

Affected versions

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

  • mbs-solutions universal gateway firmwarebefore 6_00_07

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.

  • MBS Double-A Profibus

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-A x-link

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X CAN

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X DALI

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X KNX

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X LON

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X M-Bus

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X PROFINET

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Double-X x-link

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Single-A

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Single-X

    • V1_00_00 and later · before V6_00_07affected · semver

  • MBS Triple-X KNX+DALI

    • V1_00_00 and later · before V6_00_07affected · semver

Same product

mbs-solutions: all records

Other highest-scoring records for the same primary product.

Published before and after this one in the same product

  • Later →CVE-2026-35077Jun 3, 2026 · Arbitrary file delete vulnerability in method ugw-delete-file
    28Monitor
  • Later →CVE-2026-35078Jun 3, 2026 · Arbitrary file delete vulnerability in method ugw-logstop
    28Monitor
  • Later →CVE-2026-35079Jun 3, 2026 · Arbitrary file delete vulnerability in method ugw-restore
    28Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
MBS Double-A ProfibusV6_00_07Vendor (CNA)
MBS Double-A x-linkV6_00_07Vendor (CNA)
MBS Double-X CANV6_00_07Vendor (CNA)
MBS Double-X DALIV6_00_07Vendor (CNA)
MBS Double-X KNXV6_00_07Vendor (CNA)
MBS Double-X LONV6_00_07Vendor (CNA)
MBS Double-X M-BusV6_00_07Vendor (CNA)
MBS Double-X PROFINETV6_00_07Vendor (CNA)
MBS Double-X x-linkV6_00_07Vendor (CNA)
MBS Single-AV6_00_07Vendor (CNA)
MBS Single-XV6_00_07Vendor (CNA)
MBS Triple-X KNX+DALIV6_00_07Vendor (CNA)
MBS Triple-X KNX+LONV6_00_07Vendor (CNA)
MBS Triple-X KNX+M-BusV6_00_07Vendor (CNA)
MBS Triple-X PROFINET+DALIV6_00_07Vendor (CNA)
MBS Triple-X PROFINET+KNXV6_00_07Vendor (CNA)
MBS Triple-X PROFINET+LONV6_00_07Vendor (CNA)
MBS Triple-X PROFINET+M-BusV6_00_07Vendor (CNA)

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-2026-350770 days apartArbitrary file delete vulnerability in method ugw-delete-file
    28Monitor
  • CVE-2026-350780 days apartArbitrary file delete vulnerability in method ugw-logstop
    28Monitor
  • CVE-2026-350790 days apartArbitrary file delete vulnerability in method ugw-restore
    28Monitor
  • CVE-2026-350800 days apartArbitrary file delete vulnerability in method ugw-restoreinfo
    28Monitor

Chain candidates

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

—

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-73 · External Control of File Name or Path

CVSS vector

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

nvd-secondary

Attack context

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

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

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

All records