TI-2025-27725 Aliases CVE-2025-41765 GHSA-jwj6-8fh8-pw76

Unchecked role in wwwupload.cgi

MEDIUM 45CWE-862Published 2026-03-09 · Updated 2026-03-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Due to insufficient authorization enforcement, an unauthorized remote attacker can exploit the wwwupload.cgi endpoint to upload and apply arbitrary data. This includes, but is not limited to, contact images, HTTPS certificates, system backups for restoration, server peer configurations, and BACnet/SC server certificates and keys.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00281 20th percentileScored 2026-11-07

Fix Fixed UBR-01 Mk II (MBS): 6.0.1.0UBR-02 (MBS): 6.0.1.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
MBS	UBR-01 Mk II	0.0.0 to before 6.0.1.0	6.0.1.0	Patch available	CNA
MBS	UBR-02	0.0.0 to before 6.0.1.0	6.0.1.0	Patch available	CNA
MBS	UBR-LON	0.0.0 to before 6.0.1.0	6.0.1.0	Patch available	CNA

UBR-01 Mk II VendorMBS Affected 0.0.0 to before 6.0.1.0 Fixed in 6.0.1.0 Patch available CNA
UBR-02 VendorMBS Affected 0.0.0 to before 6.0.1.0 Fixed in 6.0.1.0 Patch available CNA
UBR-LON VendorMBS Affected 0.0.0 to before 6.0.1.0 Fixed in 6.0.1.0 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:mbs-solutions:universal_bacnet_router_firmware::::::::	before 6.0.1.0	Vulnerable	MBS
cpe:2.3:h:mbs-solutions:ubr-01_mk_ii:-:::::::*	not specified by NVD	Running on	MBS
cpe:2.3:h:mbs-solutions:ubr-02:-:::::::*	not specified by NVD	Running on	MBS
cpe:2.3:h:mbs-solutions:ubr-lon:-:::::::*	not specified by NVD	Running on	MBS

cpe:2.3:o:mbs-solutions:universal_bacnet_router_firmware:*:*:*:*:*:*:*:* Versions before 6.0.1.0 Vulnerable ·MBS
cpe:2.3:h:mbs-solutions:ubr-01_mk_ii:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MBS
cpe:2.3:h:mbs-solutions:ubr-02:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MBS
cpe:2.3:h:mbs-solutions:ubr-lon:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MBS

Remediation

Fix · CNA UBR-01 Mk II (MBS) Fixed in 6.0.1.0
Fix · CNA UBR-02 (MBS) Fixed in 6.0.1.0
Fix · CNA UBR-LON (MBS) Fixed in 6.0.1.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-03-09
MBS UBR-01 Mk II, UBR-02, UBR-LON 6.0.1.0
15 records Highest priority Priority MEDIUM 5 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2025-27724 Unchecked role in wwwupdate.cgiPriority MEDIUM 46
- TI-2025-27726 Stack buffer overflow on parsing web requestPriority MEDIUM 41
- TI-2025-27718 Arbitrary Write with wwwupload.cgiPriority MEDIUM 41
Show all 15 records →

Timeline

2026-10-02 Threatist record created from CVE-2025-41765
2026-10-03 Alias added: GHSA-jwj6-8fh8-pw76

References

Advisory 1

https://www.mbs-solutions.de/mbs-2025-0001

TI-2025-27724 Unchecked role in wwwupdate.cgi CVSS 3.1CRITICAL 9.1
TI-2025-27726 Stack buffer overflow on parsing web request CVSS 3.1HIGH 8.8
TI-2025-27718 Arbitrary Write with wwwupload.cgi CVSS 3.1HIGH 8.8
TI-2025-27717 Arbitrary Write with ubr-restore CVSS 3.1HIGH 8.8
TI-2025-27732 wwwupdate.cgi Session token in URL CVSS 3.1HIGH 7.5
TI-2025-27721 Privilege escalation possible CVSS 3.1HIGH 7.8

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences