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Local privilege escalation in Zammad v1.5.0 to v7.2.2 installed via DEB or RPM package

Zammad GmbH Zammad · CVE-2026-102490
0 news outlets0 CERTs and agencies0 researchers

What is it?

Zammad packages built with packager.io (DEB and RPM) could have allowed a local attacker who already had file system write privileges as the unprivileged zammad service account to escalate to full root privileges on the host. Service processes began running as root and executed files that were owned and writable by the zammad account before dropping their identity to that account. An attacker holding that foothold could have escalated within seconds, because the affected services were restarted automatically whenever they stopped; no administrator interaction was required. Only installations from the DEB and RPM packages were affected — installations from source or the official container images were not. All released packaged versions were affected.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
8.5
EPSS
0.5%
First seen
4 h ago
Status
confirmed

All Zammad GmbH vulnerabilities