High (8.8) in grandstream ucm6204 firmware. EPSS 44% chance of exploitation in the next 30 days.
Grandstream UCM6204 before 1.0.19.20 devices allow remote authenticated users to execute arbitrary code via shell metacharacters in the backupUCMConfig file-backup parameter to the /cgi? URI.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
44% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)