Service interruption via concurrent monitoring requests
Published Sep 30, 2026 · Updated Sep 30, 2026
Improper synchronization in CODESYS Control monitoring allows remote authenticated users to interrupt service through concurrent requests. The monitoring functionality does not coordinate simultaneous client access, producing incorrect reads or writes and corrupting internal memory structures. Exploitation requires monitoring access and concurrent requests; the published description does not identify a specific function or establish whether interruption is a crash or hang.
Summary
What happened
Improper synchronization in CODESYS Control monitoring allows remote authenticated users to interrupt service through concurrent requests. The monitoring functionality does not coordinate simultaneous client access, producing incorrect reads or writes and corrupting internal memory structures. Exploitation requires monitoring access and concurrent requests; the published description does not identify a specific function or establish whether interruption is a crash or hang.
The record
- CVE
- CVE-2026-79625
- Published
- Sep 30, 2026
- Updated
- Sep 30, 2026
- Vendor
- CODESYS GmbH
- Product
- CODESYS Control for BeagleBone SL
- Classifications
- T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 30, 2026CVE publishedPublication date reported by the CVE source.
- Sep 30, 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=3.5.0.0 <4.23.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
Activity data is delayed. The latest report is Sep 28, 2026.
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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