CVE-2023-42033Network attack vector

Root code execution via unchecked upload path

Published May 3, 2024 · Updated Aug 2, 2024

Path traversal in Visualware MyConnection Server 11.3c allows remote attackers to execute arbitrary code through a crafted upload path. The doPostUploadfiles method uses a user-supplied path in file operations without restricting traversal outside the intended directory. Access normally requires authentication, but the documented bypass makes the upload path reachable, and successful exploitation executes code as root.

CVSS severity7.2
High
EPSS probability3.27%
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 Visualware MyConnection Server 11.3c allows remote attackers to execute arbitrary code through a crafted upload path. The doPostUploadfiles method uses a user-supplied path in file operations without restricting traversal outside the intended directory. Access normally requires authentication, but the documented bypass makes the upload path reachable, and successful exploitation executes code as root.

The record

CVE
CVE-2023-42033
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Visualware
Product
MyConnection Server
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=11.3c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Visualware · MyConnection Serverversion=11.3c

Published CVSS scores

7.2Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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