CVE-2026-76992Uncontrolled Memory Allocation in CODESYS Gateway Client
Updated under an hour ago ()
Does this affect you?
It affects CODESYS Development System 3 and 7 other products. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.33%, higher than 24% of scored CVEs.
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The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablity.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.33% (percentile 24)
- Assigned by
- CERTVDE
- NVD analysis
- Deferred
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
CODESYS Development System 3 codesys:development_system_3 (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS Gateway codesys:gateway (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS Edge Gateway for Windows codesys:edge_gateway_for_windows (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS HMI (SL) codesys:hmi_sl (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS OPC DA Server SL codesys:opc_da_server_sl (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS PLCHandler codesys:plchandler (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS Runtime Toolkit codesys:runtime_toolkit (from the name) | from 3.0.0.0 before 3.5.22.40 | CNA record |
CODESYS Edge Gateway for Linux codesys:edge_gateway_for_linux (from the name) | from 3.15.0.0 before 4.23.0.0 | CNA record |
References
- https://www.certvde.com/en/advisories/VDE-2026-094/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.