CVE Catalog

CVE-2026-76992

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.57%

45th percentile - higher than 45% of all known CVEs

Summary

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 availability.

Risk Assessment

An attacker can cause system unavailability, potentially leading to disruption of industrial processes or critical operations. This could result in significant financial and operational losses.

Recommendation

Update the CODESYS Gateway Client to the latest version containing a fix. Also restrict access to the gateway and monitor memory usage.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS