CVE-2023-39699Public exploitNetwork attack vector

Unauthenticated file disclosure and execution via path inclusion

Published Aug 24, 2023 · Updated Oct 3, 2024

Local file inclusion in IceWarp Mail Server 10.4.5 allows remote attackers to include or execute server-local files through a web request. The /calendar/minimizer/index.php endpoint passes an attacker-controlled path to a PHP file inclusion operation without restricting it to an allowed directory. No authentication or user interaction is required, and exploitation reads or executes files accessible to the server process.

CVSS severity9.8
Critical
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file inclusion in IceWarp Mail Server 10.4.5 allows remote attackers to include or execute server-local files through a web request. The /calendar/minimizer/index.php endpoint passes an attacker-controlled path to a PHP file inclusion operation without restricting it to an allowed directory. No authentication or user interaction is required, and exploitation reads or executes files accessible to the server process.

The record

CVE
CVE-2023-39699
Published
Aug 24, 2023
Updated
Oct 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

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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