Database disclosure and table modification via UpdateParam SQLi
Published May 27, 2026 · Updated May 27, 2026
SQL injection in affected myREX24 V2 and mbCONNECT24 portals through 2.20.0 allows remote authenticated users to read and alter databases. The UpdateParam function in view.html.php embeds attacker-controlled special characters in an SQL UPDATE command without proper neutralization across myREX24 V2, myREX24 V2 Virtual Server, mbCONNECT24, and mymbCONNECT24. High-privileged portal access is required; exploitation exposes the entire database and permits changes only to a noncritical table, without reported service interruption.
Summary
What happened
SQL injection in affected myREX24 V2 and mbCONNECT24 portals through 2.20.0 allows remote authenticated users to read and alter databases. The UpdateParam function in view.html.php embeds attacker-controlled special characters in an SQL UPDATE command without proper neutralization across myREX24 V2, myREX24 V2 Virtual Server, mbCONNECT24, and mymbCONNECT24. High-privileged portal access is required; exploitation exposes the entire database and permits changes only to a noncritical table, without reported service interruption.
The record
- CVE
- CVE-2026-40829
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Vendor
- Helmholz GmbH & Co. KG
- Product
- myREX24 V2 Virtual Server
- Classifications
- CWE-89, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- May 27, 2026CVE publishedPublication date reported by the CVE source.
- May 27, 2026Record 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.
- Affected versionversion=0.0.0 <=2.20.0
- Affected versionversion=2.20.0
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
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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