CVE-2023-42033: Visualware MyConnection Server doPostUploadfiles Directory Traversal Remote Code Execution Vulnerability

This month

HIGH 7.2DOWNGRADE

CVE-2023-42033 is a high-severity flaw (CVSS 7.2) affecting myconnection server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Visualware MyConnection Server doPostUploadfiles Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Visualware MyConnection Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the doPostUploadfiles method. The issue results from the la

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	3.3% (top 12%)
CISA exploited list	No
Weakness	CWE-22
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: visualware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-03 03:15 UTCPublished CVE record published
2026-06-17 06:23 UTCUpdated Record last modified

visualware myconnection server DOWNGRADE

Affected: 11.3c

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.3c

1. Check installed version

apt-cache policy myconnection-server || rpm -q myconnection-server || myconnection-server --version

2. No fixed release: DOWNGRADE to a release before 11.3c (Debian / Ubuntu)

apt-cache madison myconnection-server sudo apt install myconnection-server=<VERSION_BEFORE_11.3c> sudo apt-mark hold myconnection-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list myconnection-server sudo dnf downgrade myconnection-server-<VERSION_BEFORE_11.3c> sudo dnf versionlock add myconnection-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-42033?

myconnection server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-42033 being exploited?

CVE-2023-42033 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-42033 affect?

CVE-2023-42033 affects myconnection server. Severity is high (CVSS 7.2). Visualware MyConnection Server doPostUploadfiles Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Visualware MyConnection Server. Alth

How urgent is CVE-2023-42033?

Priority 47/100. High severity

Related CVEs

CVE-2023-42035 MEDIUM 6.5 DOWNGRADE Visualware MyConnection Server doIForward XML External Entity Processing Information Disclosure Vulnerability
CVE-2023-42034 HIGH 8.8 DOWNGRADE Visualware MyConnection Server doRTAAccessCTConfig Cross-Site Scripting Authentication Bypass Vulnerability
CVE-2023-42032 HIGH 7.5 DOWNGRADE Visualware MyConnection Server doRTAAccessUPass Exposed Dangerous Method Information Disclosure Vulnerability

References

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