--- title: "CVE-2026-76992: CODESYS Gateway Client - Denial of Service" description: "CODESYS Gateway Client contains a denial of service caused by unchecked memory allocation based on size field in gateway response, letting unauthenticated remote attackers cause excessive memory consumption, exploit requires attacker to control a malicious gateway." url: https://panop.io/threat-heartbeat/CVE-2026-76992/ --- # CVE-2026-76992 CODESYS Gateway Client - Denial of Service CODESYS Gateway Client contains a denial of service caused by unchecked memory allocation based on size field in gateway response, letting unauthenticated remote attackers cause excessive memory consumption, exploit requires attacker to control a malicious gateway. CVSS base score 7.5 /10 High CISA KEV Not listed Public exploit None known EPSS 0.33% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-76992) ## Details Type Denial of Service Impact Denial Of Service CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Published 30 September 2026 Updated 15 October 2026 Weakness [CWE-770](https://cwe.mitre.org/data/definitions/770.html) ## Vendor fix Update to the latest version with appropriate memory allocation limits. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-76992](https://nvd.nist.gov/vuln/detail/CVE-2026-76992) - [https://www.certvde.com/en/advisories/VDE-2026-094/](https://www.certvde.com/en/advisories/VDE-2026-094/) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)