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 ↗

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

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

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