Description
Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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Beckhoff TwinCAT SCADA PLC 2.11.0.2004 DoS
auxiliary/dos/scada/beckhoff_twincat
Exploit-DB 1
- Beckhoff TwinCAT 2.11.0.2004 - Denial of Service EDB-17835 · dos · Sep 14, 2011 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- ICSA-11-279-04 Beckhoff TwinCAT Read Access Violation CISA ICS & IT advisories · Jun 9, 2025
References
- twincat-datagram-dos(69765) vdb-entry
- 8380 third-party-advisory
- http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf
- 75495 vdb-entry
- http://aluigi.altervista.org/adv/twincat_1-adv.txt