CVE-2026-76992: Uncontrolled Memory Allocation in CODESYS Gateway Client
CODESYS · Development System 3
Vendor fix available · Affected: CODESYS Development System 3 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 26% of scored CVEs
DescriptionCVE.org
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.
Affected products8
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- CODESYS · Development System 3from 3.0.0.0 before 3.5.22.40
- CODESYS · Gatewayfrom 3.0.0.0 before 3.5.22.40
- CODESYS · Edge Gateway for Windowsfrom 3.0.0.0 before 3.5.22.40
- CODESYS · HMI (SL)from 3.0.0.0 before 3.5.22.40
- CODESYS · OPC DA Server SLfrom 3.0.0.0 before 3.5.22.40
- CODESYS · PLCHandlerfrom 3.0.0.0 before 3.5.22.40
- CODESYS · Runtime Toolkitfrom 3.0.0.0 before 3.5.22.40
- CODESYS · Edge Gateway for Linuxfrom 3.15.0.0 before 4.23.0.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- CODESYS
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-76992 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.