CVE-2026-76992

highPriorität · verfolgen · 30EPSS 0.003 · 26. PerzentilDE

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (26th) EPSS

CVSS 7.5 · high

Is it mine?

24 products

Prüfe deine Angriffsfläche

Who says so?

2 sources

cert_bund · codesys_psirt

EPSS · bewertet 2026-10-27

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.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobencodesys_psirt
Update the following products to version 3.5.22.40. * CODESYS Development System 3 * CODESYS Gateway * CODESYS Edge Gateway for Windows * CODESYS HMI (SL) * CODESYS OPC DA Server SL * CODESYS PLCHandler * CODESYS Runtime Toolkit The CODESYS Development System and the products available as CODESYS add-ons can be downloaded and installed directly with the CODESYS Installer or be downloaded from the CODESYS Store. Alternatively, as well as for all other products, you will find further information on obtaining the software update in the CODESYS Update area https://www.codesys.com/download/.
Kein Fix verfügbarCODESYS Edge Gateway for Linuxcodesys_psirt
Update the following product to version 4.23.0.0. The release of this version is expected in Q4 2026. * CODESYS Edge Gateway for Linux The CODESYS Development System and the products available as CODESYS add-ons can be downloaded and installed directly with the CODESYS Installer or be downloaded from the CODESYS Store. Alternatively, as well as for all other products, you will find further information on obtaining the software update in the CODESYS Update area https://www.codesys.com/download/.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.7

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · info@cert.vde.comAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CODESYS PSIRT

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · info@cert.vde.com

v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-770USCWE-770US

betroffene Produkte (24)

Betroffene Produkte und Versionsbereiche.

CODESYS CODESYS≤ Development System 3 <3.5.22.40cert_bundDE
CODESYS CODESYS≤ Edge Gateway for Linux <4.23.0.0cert_bundDE
CODESYS CODESYS≤ Edge Gateway for Windows <3.5.22.40cert_bundDE
CODESYS CODESYS≤ Gateway <3.5.22.40cert_bundDE
CODESYS CODESYS≤ HMI (SL) <3.5.22.40cert_bundDE
CODESYS CODESYS≤ OPC DA Server SL <3.5.22.40cert_bundDE
CODESYS CODESYS≤ PLCHandler <3.5.22.40cert_bundDE
CODESYS CODESYS≤ Runtime Toolkit <3.5.22.40cert_bundDE
CODESYS Development System 3≤ vers:generic/>=3.0.0.0|<3.5.22.40codesys_psirtDEcpe:2.3:a:codesys:codesys_development_system_3:*:*:*:*:*:*:*:*
CODESYS Development System 3alle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_development_system_3:3.5.22.40:*:*:*:*:*:*:*
CODESYS Edge Gateway for Linux≤ vers:generic/>=3.15.0.0|<4.23.0.0codesys_psirtDEcpe:2.3:a:codesys:codesys_edge_gateway_for_linux:*:*:*:*:*:*:*:*
CODESYS Edge Gateway for Linuxalle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_edge_gateway_for_linux:4.23.0.0:*:*:*:*:*:*:*
CODESYS Edge Gateway for Windows≤ vers:generic/>=3.0.0.0|<3.5.22.40codesys_psirtDEcpe:2.3:a:codesys:codesys_edge_gateway_for_windows:*:*:*:*:*:*:*:*
CODESYS Edge Gateway for Windowsalle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_edge_gateway_for_windows:3.5.22.40:*:*:*:*:*:*:*
CODESYS Gateway ≤ vers:generic/>=3.0.0.0|<3.5.22.40codesys_psirtDEcpe:2.3:a:codesys:codesys_gateway:*:*:*:*:*:*:*:*
CODESYS Gateway alle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_gateway:3.5.22.40:*:*:*:*:*:*:*
CODESYS HMI (SL)≤ vers:generic/>=3.0.0.0|<3.5.22.40codesys_psirtDEcpe:2.3:a:codesys:codesys_hmi_sl:*:*:*:*:*:*:*:*
CODESYS HMI (SL)alle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_hmi_sl:3.5.22.40:*:*:*:*:*:*:*
CODESYS OPC DA Server SL≤ vers:generic/>=3.0.0.0|<3.5.22.40codesys_psirtDEcpe:2.3:a:codesys:codesys_opc_da_server_sl:*:*:*:*:*:*:*:*
CODESYS OPC DA Server SLalle Versionenfixedcodesys_psirtDEcpe:2.3:a:codesys:codesys_opc_da_server_sl:3.5.22.40:*:*:*:*:*:*:*

20 von 24 angezeigt

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

Advisory2026-11_VDE-2026-094CODESYS Gateway Client - Uncontrolled Memory Allocation2026-09-30csaf · codesys_psirtDE
The CODESYS Gateway Client (CmpGatewayClient) is used by various CODESYS products to establish PLC communication via the CODESYS Gateway. Due to missing limits on memory allocations derived from a size field in a gateway response, a malicious gateway can cause excessive memory consumption in the client, resulting in a denial-of-service condition. The vulnerability can be exploited when an affected product connects to an attacker-controlled gateway.
WID-SEC-W-2026-3688CODESYS Gateway Client: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-09-30csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in CODESYS Gateway Client ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2026-3710CODESYS Control Runtime und Gateway Client: Mehrere SchwachstellenDeutsch2026-10-01csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in CODESYS Control Runtime und Gateway Client ausnutzen, um Daten zu manipulieren und einen Denial-of-Service-Zustand herbeizuführen.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cert_bund codesys_psirt NVD CVE.org MITRE

veröffentlicht 2026-09-30geändert 2026-09-30

Referenzen (1) nvd

Externe Belege — Patches, Meldungen, Analysen.

https://www.certvde.com/en/advisories/VDE-2026-094/

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

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