- Published
- Source
- BleepingComputer
- Filed under
- Data breaches, Zero-days, AI attacks
The Dutch Institute for Vulnerability Disclosure (DIVD) says that the breach of its network was possible by exploiting a chain of two zero-day vulnerabilities in the open-source Zammad ticketing system.
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.
More helpCISA's Known Exploited Vulnerabilities catalogue (opens in a new tab)
Defender’s notebook
The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.
Exploit Public-Facing Application
Initial AccessWhat a defender checks
- Find every internet-facing instance of the affected product.
- Patch, or apply the vendor's mitigation now – CISA's KEV list gives a deadline.
- Look for signs it was exploited before you patched: web shells, new accounts, odd outbound traffic.
Build the skillBlue Team Analyst · Vulnerability Management
© 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.
MyCyberWay training
Blue Team Specialist
Breaches like this get investigated, not just reported.
Blue Team Specialist takes the Analyst curriculum and adds the investigator's work: one incident owned end to end, hypothesis-led threat hunting with MITRE ATT&CK and KQL, breach analysis, and a root cause report people can act on.
- Scope, attacker path and dwell time
- Threat hunting with ATT&CK and KQL
- Root cause analysis and reporting
Headlines and short summaries only, except where a public body publishes under an open licence. Every story links to its publisher, who owns it. MyCyberWay does not edit or endorse third-party reporting.
