CVE-2025-41756

Arbitrary Write with ubr-editfile

Published Mar 9, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API endpoint to write arbitrary files on the system.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Mbs-solutions
Mbs-solutions ubr-01 Mk Ii
Mbs-solutions ubr-02
Mbs-solutions ubr-lon
Mbs-solutions universal Bacnet Router Firmware
CPEs cpe:2.3:h:mbs-solutions:ubr-01_mk_ii:-:*:*:*:*:*:*:*
cpe:2.3:h:mbs-solutions:ubr-02:-:*:*:*:*:*:*:*
cpe:2.3:h:mbs-solutions:ubr-lon:-:*:*:*:*:*:*:*
cpe:2.3:o:mbs-solutions:universal_bacnet_router_firmware:*:*:*:*:*:*:*:*
Vendors & Products Mbs-solutions
Mbs-solutions ubr-01 Mk Ii
Mbs-solutions ubr-02
Mbs-solutions ubr-lon
Mbs-solutions universal Bacnet Router Firmware
Type Values Removed Values Added
First Time appeared Mbs
Mbs ubr-01 Mk Ii
Mbs ubr-02
Mbs ubr-lon
Vendors & Products Mbs
Mbs ubr-01 Mk Ii
Mbs ubr-02
Mbs ubr-lon
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API endpoint to write arbitrary files on the system.
Title Arbitrary Write with ubr-editfile
Weaknesses CWE-1242
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}

Weaknesses
  • CWE-1242

    Inclusion of Undocumented Features or Chicken Bits

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Mar 9, 2026, 8:14 PM
Reserved
Apr 16, 2025, 11:18 AM
Status
Analyzed
Published
Mar 9, 2026, 9:15 AM
Modified
Jun 17, 2026, 9:23 AM