Vulnerability · Published Mar 9, 2026 · Assigned by CERTVDE
CVE-2025-41756Arbitrary Write with ubr-editfile
High 8.1
In plain English
A high-severity security flaw in UBR-01 Mk II from MBS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 69.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-1242 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H