CVE-2023-40747Network attack vector

Unauthenticated file read via path traversal

Published Mar 18, 2024 · Updated Mar 18, 2025

Path traversal in A.K.I Software PMailServer and PMailServer2's Internal Simple Webserver allows remote attackers to read server files. Its CGI request handling does not confine requested filesystem paths to DocumentRoot, allowing paths to resolve to files outside the web root. No authentication or user interaction is required; exposure requires use of the affected CGI or Internal Simple Webserver.

CVSS severity5.3
Medium
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in A.K.I Software PMailServer and PMailServer2's Internal Simple Webserver allows remote attackers to read server files. Its CGI request handling does not confine requested filesystem paths to DocumentRoot, allowing paths to resolve to files outside the web root. No authentication or user interaction is required; exposure requires use of the affected CGI or Internal Simple Webserver.

The record

CVE
CVE-2023-40747
Published
Mar 18, 2024
Updated
Mar 18, 2025
Vendor
A.K.I Software
Product
pmman.exe (Pro + IMAP4 edition)
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 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=0 <2.5.1.12157
  2. Affected versionversion=2.5.1.12157 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

A.K.I Software · pmman.exe (Pro + IMAP4 edition)version=0 <2.5.1.12157; version=2.5.1.12157 and earlier
A.K.I Software · pmman.exe (Enterprise edition)version=0 <2.5.1.12158; version=2.5.1.12158 and earlier
A.K.I Software · pmman.exe (Standard + IMAP4 edition)version=0 <2.5.1.12156; version=2.5.1.12156 and earlier
A.K.I Software · pmman.exe (Pro edition)version=0 <2.5.1.12155; version=2.5.1.12155 and earlier
A.K.I Software · pmman.exe (Standard edition)version=0 <2.5.1.12154; version=2.5.1.12154 and earlier

Published CVSS scores

5.0JPCERT/CC and IPAAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.3JPCERT/CC and IPACVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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

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Your stack

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