CVE-2025-41758

Arbitrary Write with wwwupload.cgi

State: Published
Severity: 8.8 High
Published: Mar 9, 2026
Updated: Mar 9, 2026
Reserved: Apr 16, 2025

Description

A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to path traversal this can lead to overwriting arbitrary files on the device and achieving a full system compromise.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CERTVDE

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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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