Resource exhaustion in Codesys Development System 3
CVE-2026-76992
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-76992?
- CVE-2026-76992 is a high-severity vulnerability in Codesys Development System 3, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-30.
- How severe is CVE-2026-76992?
- High severity. CVSS v3 base score is 7.5 out of 10.