CVE-2025-41767

Signature bypass on update upload

State: Published
Severity: 7.2 High
Published: Mar 9, 2026
Updated: Mar 9, 2026
Reserved: Apr 16, 2025

Description

A high-privileged remote attacker can fully compromise the device by abusing an update signature bypass vulnerability in the wwwupdate.cgi method in the web interface of UBR.

Scores

CVSS	Score	Vector	Source
3.1	7.2 High	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	CERTVDE

Weaknesses

CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
UBR-01 Mk IIMBS	0.0.0 to before 6.0.1.0Affected
UBR-02MBS	0.0.0 to before 6.0.1.0Affected
UBR-LONMBS	0.0.0 to before 6.0.1.0Affected

References

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

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