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CVE-2025-41758

Arbitrary Write with wwwupload.cgi

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.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more
CVE-2025-41757

Arbitrary Write with ubr-restore

A low-privileged remote attacker can abuse the backup restore functionality of UBR (ubr-restore) which runs with elevated privileges and does not validate the contents of the backup archive to create or overwrite arbitrary files anywhere on the system.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more
CVE-2025-41756

Arbitrary Write with ubr-editfile

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.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more
CVE-2025-41755

Arbitrary Read with ubr-logread

A low-privileged remote attacker can exploit the ubr-logread method in wwwubr.cgi to read arbitrary files on the system. The endpoint accepts a parameter specifying the log file to open (e.g., /tmp/weblog{some_number}), but this parameter is not properly validated, allowing an attacker to modify it to reference any file and retrieve its contents.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more
CVE-2025-41754

Arbitrary Read with ubr-editfile

A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API endpoint to read arbitrary files on the system.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more
CVE-2025-41772

wwwupdate.cgi Session token in URL

An unauthenticated remote attacker can obtain valid session tokens because they are exposed in plaintext within the URL parameters of the wwwupdate.cgi endpoint in UBR.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Mbs Mbs-solutions
Products
Ubr-01 Mk Ii Ubr-02 Ubr-lon and 4 more