Operational disruption via unauthenticated RS485 preset switching
Published Feb 2, 2026 · Updated Feb 2, 2026
Unauthenticated preset switching in VibroLine and AVIBIAline 5.0 firmware allows attackers to disrupt operations via Modbus RS485. The configuration-preset switch function accepts Modbus RTU commands from the RS485 bus without authenticating the sender. Exploitation requires access to that bus and at least two stored presets; changing the active preset can interrupt normal machinery monitoring.
Summary
What happened
Unauthenticated preset switching in VibroLine and AVIBIAline 5.0 firmware allows attackers to disrupt operations via Modbus RS485. The configuration-preset switch function accepts Modbus RTU commands from the RS485 bus without authenticating the sender. Exploitation requires access to that bus and at least two stored presets; changing the active preset can interrupt normal machinery monitoring.
The record
- CVE
- CVE-2022-50979
- Published
- Feb 2, 2026
- Updated
- Feb 2, 2026
- Vendor
- AVIBIA GmbH
- Product
- AVIBIAline AVLX1 HD
- Classifications
- CWE-306, T0836
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 2, 2026CVE publishedPublication date reported by the CVE source.
- Feb 2, 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?
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- Affected versionversion=2.1.1340 <=2.1.1387
- Affected versionversion=2.1.1866
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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