- Critical 9.4
- Known exploited (CISA KEV)
CVE-2026-102490
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…
Scores
The facts
- Published
- 30 September 2026
- Last changed
- 9 October 2026
- NVD status
- Analyzed
- Severity
- Critical, CVSS 9.4 out of 10 (version 4.0)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R… - Weakness
- Affects
- zammad zammad
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 2 October 2026.
- EPSS
- 0.5% chance of exploitation activity in the next 30 days (percentile 45).
Is there a Securelyn advisory?
Not yet. Securelyn writes plain-English advisories for the flaws that matter most to businesses. Subscribe to the digest to hear about them.