Arbitrary Write with ubr-editfile
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.3%
exploitation probability
0.3%top 75% of all CVEs
observed exploitation
nono source reports it
In short
A remote attacker with low privileges can exploit a hidden API function to write any file on the server, potentially compromising the entire system.
Technical detail
The wwwubr.cgi endpoint exposes an undocumented ubr-editfile method that lacks proper access controls, allowing unauthenticated or low-privileged remote attackers to write arbitrary files to the filesystem. This CWE-1242 vulnerability bypasses intended security boundaries and can be leveraged for code execution or configuration tampering.
Summary generated and translated by AI from the 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H