CVE-2023-22278: Daj M-Filter

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

m-FILTER prior to Ver.5.70R01 (Ver.5 Series) and m-FILTER prior to Ver.4.87R04 (Ver.4 Series) allows a remote unauthenticated attacker to bypass authentication and send users' unintended email when email is being sent under the certain conditions. The attacks exploiting this vulnerability have been observed.

Affected products

• Daj M-Filter: from 4.0, before 4.87r04 (fixed in 4.87r04); from 5.0, before 5.70r01 (fixed in 5.70r01)

Published 2023-01-17. Last modified 2026-06-17.