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Published
Source
Help Net Security
Filed under
Data breaches, Zero-days, AI attacks

An agentic AI-powered attack that hit the Dutch Institute for Vulnerability Disclosure (DIVD) on September 21 exploited two zero-day vulnerabilities in Zammad, an open-source helpdesk and customer support ticketing system. “Used together, [the two flaws] allowed the attackers to hijack sessions, run code remotely and escalate privileges from the Zammad user to root, in seconds,…

Originally reported byHelp Net SecurityRead the full story on Help Net Security (opens in a new tab)

If you run the affected product

  • Find every instance – especially the ones reachable from the internet.
  • Apply the vendor's patch or mitigation now: exploited flaws are fixed in days, not at the next patch cycle.
  • Then check for signs it was used before you patched: web shells, new accounts, unusual outbound traffic.

Defender’s notebook

The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.

© 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.

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