CVE-2026-54161: NUT upsmon: mote OS command injection via ups.alarm in NOTIFYCMD - fixed in PR #3499 (affects 2.8.3–2.8.5)
Published Jul 1, 2026
·Updated
Affected Software
1 affected component
Network UPS Tools NUT upsmon>=2.8.3<=2.8.5
Prioritize Network UPS Tools upsmon deployments running versions 2.8.3 through 2.8.5 that use NOTIFYCMD, as the issue involves OS command injection through ups.alarm handling.