CVE-2023-22278

Name: CVE-2023-22278
Creator: NVD / NIST
Published: 2023-01-17T10:15:11.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2023-22278 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.71%

48.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Daj	M-Filter	>= 4.0, < 4.87r04
Daj	M-Filter	>= 5.0, < 5.70r01

References

https://jvn.jp/en/jp/JVN55675303/index.htmlThird Party Advisory
https://jvn.jp/en/jp/JVN55675303/index.htmlThird Party Advisory

Timeline

Published: Jan 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22278?

How severe is CVE-2023-22278?

CVE-2023-22278 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22278?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-22278?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST