Vulnerabilities & CVEs SecurityWeek 2 weeks ago

Zammad Zero-Days Exploited in AI-Powered DIVD Hack

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CyberNew Threat Research Desk
• Original Reporting: SecurityWeek
CyberNew Threat Intel Assessment
Assessed Severity: CRITICAL
Impacted Surface
Enterprise Perimeter & Network Defense
Intelligence Sector
Vulnerabilities & CVEs

Analyst Takeaway

"The Dutch Institute for Vulnerability Disclosure (DIVD) was hacked in an automated AI attack that exploited two zero-day vulnerabilities in the web-based, open source user support/ticketing solution Zammad. The attack occurred on September 21, triggering full incident response, including blocked access to the DIVD infrastructure. The organization immediately started investigating the incident and..."

Recommended Defense & Mitigation

  • Emergency Patching: Prioritize vendor patches and CVE mitigation across internet-facing assets immediately.
  • Perimeter Audit: Inspect perimeter firewall logs and hunt for unauthorized RCE indicators.
Curated & Verified by CyberNew Threat Intelligence Desk Standard Defense Framework (NIST / MITRE ATT&CK)
Zero-day

The Dutch Institute for Vulnerability Disclosure (DIVD) was hacked in an automated AI attack that exploited two zero-day vulnerabilities in the web-based, open source user support/ticketing solution Zammad.

The attack occurred on September 21, triggering full incident response, including blocked access to the DIVD infrastructure. The organization immediately started investigating the incident and notified the relevant Dutch authorities.

“This is an attack we have not seen before. Not because it’s our first, but because the modus operandi indicates that this is an agentic AI-powered attack,” it said in a September 24 post on LinkedIn.

DIVD’s investigation identified two zero-day vulnerabilities in Zammad that were exploited for initial access, the organization said on September 30.

The first flaw, CVE-2026-102489 (CVSS score of 9.4), enables unauthenticated attackers to achieve remote code execution and leak user sessions.

The second, CVE-2026-102490 (CVSS score of 9.4), allows a local user to elevate their privileges to root.

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“Used together, they allowed the attackers to hijack sessions, run code remotely, and escalate privileges from the Zammad user to root, in seconds, due to the agentic part of this hack,” DIVD says.

Written By Ionut Arghire

Source Verification & Original Intelligence

This threat report was reviewed by CyberNew analysts and cross-referenced with primary security disclosures from SecurityWeek.

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