CVE-2026-76992
7.5 HIGHPublished 2026-09-30 · Updated 2026-09-30
AI risk analysis
- Summary
- The CODESYS Gateway Client suffers from excessive memory allocation due to missing size limits on gateway responses, allowing unauthenticated attackers to cause denial-of-service through memory exhaustion.
- Exploitability
- Exploitation requires an attacker to control a malicious gateway that can send crafted responses with oversized size fields, making it moderately difficult but possible in environments where such gateways are trusted.
- Blast radius
- In industrial control systems using CODESYS Gateway Client, this vulnerability could lead to complete system unavailability, affecting critical infrastructure operations and potentially causing production halts or safety issues.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Disable the affected gateway client functionality until a patched version is available, as no fixed version is specified in the description.
Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-770
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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