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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://www.certvde.com/en/advisories/VDE-2026-094/ |
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History
Wed, 30 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Codesys development System V3
Codesys edge Gateway For Linux Codesys gateway Codesys hmi (sl) Codesys opc Da Server Codesys plchandler Codesys runtime Toolkit |
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| Vendors & Products |
Codesys development System V3
Codesys edge Gateway For Linux Codesys gateway Codesys hmi (sl) Codesys opc Da Server Codesys plchandler Codesys runtime Toolkit |
Wed, 30 Sep 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Uncontrolled Memory Allocation in CODESYS Gateway Client | |
| First Time appeared |
Codesys
Codesys codesys Development System 3 Codesys codesys Edge Gateway For Linux Codesys codesys Edge Gateway For Windows Codesys codesys Gateway Codesys codesys Hmi Sl Codesys codesys Opc Da Server Sl Codesys codesys Plchandler Codesys codesys Runtime Toolkit |
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| Weaknesses | CWE-770 | |
| CPEs | cpe:2.3:a:codesys:codesys_development_system_3:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_edge_gateway_for_linux:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_edge_gateway_for_windows:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_gateway:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_hmi_sl:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_opc_da_server_sl:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_plchandler:*:*:*:*:*:*:*:* cpe:2.3:a:codesys:codesys_runtime_toolkit:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Codesys
Codesys codesys Development System 3 Codesys codesys Edge Gateway For Linux Codesys codesys Edge Gateway For Windows Codesys codesys Gateway Codesys codesys Hmi Sl Codesys codesys Opc Da Server Sl Codesys codesys Plchandler Codesys codesys Runtime Toolkit |
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| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: CERTVDE
Published: 2026-09-30T11:07:45.751Z
Updated: 2026-09-30T15:28:07.834Z
Reserved: 2026-08-20T06:57:08.465Z
Link: CVE-2026-76992
No data.
Status : Deferred
Published: 2026-09-30T11:16:47.283
Modified: 2026-09-30T19:57:08.043
Link: CVE-2026-76992
No data.