Critical (9.8) in smartertools smartermail. EPSS 85% chance of exploitation in the next 30 days.
SmarterTools SmarterMail 16.x before build 6985 allows deserialization of untrusted data. An unauthenticated attacker could run commands on the server when port 17001 was remotely accessible. This port is not accessible remotely by default after applying the Build 6985 patch.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
85% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)