CVE-2023-34207Network attack vector

Authenticated SYSTEM command execution via crafted ZIP

Published Oct 17, 2023 · Updated Sep 13, 2024

Unrestricted file upload in EasyUse MailHunter Ultimate 2023 and earlier allows remote authenticated users to execute system commands. The create-template function accepts a crafted ZIP archive containing a dangerous file type and permits its contents to execute as NT AUTHORITY\SYSTEM. A valid account is required, and successful exploitation grants arbitrary command execution with Windows SYSTEM privileges.

CVSS severity9.9
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
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

Unrestricted file upload in EasyUse MailHunter Ultimate 2023 and earlier allows remote authenticated users to execute system commands. The create-template function accepts a crafted ZIP archive containing a dangerous file type and permits its contents to execute as NT AUTHORITY\SYSTEM. A valid account is required, and successful exploitation grants arbitrary command execution with Windows SYSTEM privileges.

The record

CVE
CVE-2023-34207
Published
Oct 17, 2023
Updated
Sep 13, 2024
Vendor
EasyUse Digital Technology
Product
MailHunter Ultimate
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 2024Record 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=0 <=2023

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

EasyUse Digital Technology · MailHunter Ultimateversion=0 <=2023

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.9ZUSO ARTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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.

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