Advisory Published

ZDI-CAN-20500: ZDI-23-1011: (Pwn2Own) PTC KEPServerEX Variant Resource Exhaustion Denial-of-Service Vulnerability

First published: Mon Jul 31 2023(Updated: )

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of PTC KEPServerEX. Authentication is not required to exploit this vulnerability.

Affected SoftwareAffected VersionHow to fix
PTC Kepware KEPServerEX

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of ZDI-CAN-20500?

    ZDI-CAN-20500 is considered a critical vulnerability due to its potential to cause denial-of-service without requiring authentication.

  • How do I fix ZDI-CAN-20500?

    To mitigate ZDI-CAN-20500, it is recommended to apply available patches from PTC for KEPServerEX.

  • Which versions of PTC KEPServerEX are affected by ZDI-CAN-20500?

    All currently supported versions of PTC KEPServerEX are susceptible to the ZDI-CAN-20500 vulnerability.

  • Can ZDI-CAN-20500 be exploited remotely?

    Yes, ZDI-CAN-20500 allows remote attackers to exploit the vulnerability without requiring any authentication.

  • What potential impacts does ZDI-CAN-20500 have?

    ZDI-CAN-20500 can lead to a denial-of-service condition, making the affected system unusable.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203