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Medium severity5.3NVD Advisory· Published Nov 21, 2019· Updated Jun 17, 2026

CVE-2019-5636

CVE-2019-5636

Description

When a Beckhoff TwinCAT Runtime receives a malformed UDP packet, the ADS Discovery Service shuts down. Note that the TwinCAT devices are still performing as normal. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

Affected products

6
  • Beckhoff/Twincat5 versions
    cpe:2.3:a:beckhoff:twincat:2.0:build2304:*:*:*:*:*:*+ 4 more
    • cpe:2.3:a:beckhoff:twincat:2.0:build2304:*:*:*:*:*:*
    • cpe:2.3:a:beckhoff:twincat:3.1:build4024.0:*:*:*:*:*:*
    • (no CPE)range: <=2.304, <=3.1.4204.0
    • (no CPE)range: 2304
    • (no CPE)range: 4204.0
  • Beckhoff/TwinCAT Runtimellm-create
    Range: <=2.304, <=3.1.4204.0

Patches

Vulnerability mechanics

References

2

News mentions

0

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