CVE-2023-22278Known exploitationNetwork attack vector

Unauthenticated email sending via authentication bypass

Published Jan 17, 2023 · Updated Apr 4, 2025

Authentication bypass in Digital Arts m-FILTER 5 Series before 5.70R01 and 4 Series before 4.87R04 allows remote attackers to send unintended email. The vendor has disclosed only an improper implementation in the email-sending authentication process, without naming the faulty component or validation error. Exploitation requires certain undisclosed mail-sending conditions and can blacklist the source IP or consume archive disk space; attacks have been observed.

CVSS severity5.3
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authentication bypass in Digital Arts m-FILTER 5 Series before 5.70R01 and 4 Series before 4.87R04 allows remote attackers to send unintended email. The vendor has disclosed only an improper implementation in the email-sending authentication process, without naming the faulty component or validation error. Exploitation requires certain undisclosed mail-sending conditions and can blacklist the source IP or consume archive disk space; attacks have been observed.

The record

CVE
CVE-2023-22278
Published
Jan 17, 2023
Updated
Apr 4, 2025
Vendor
Digital Arts Inc.
Product
m-FILTER
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=m-FILTER prior to Ver.5.70R01 (Ver.5 Series) and m-FILTER prior to Ver.4.87R04 (Ver.4 Series)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Digital Arts Inc. · m-FILTERversion=m-FILTER prior to Ver.5.70R01 (Ver.5 Series) and m-FILTER prior to Ver.4.87R04 (Ver.4 Series)

Published CVSS scores

5.3JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
4.3JPCERT/CCAV:N/AC:M/Au:N/C:N/I:N/A:P
5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo