CVE-2026-72842
Authenticated low-priv LuCI users can escape LXC and achieve root code execution on OpenWrt.
Is CVE-2026-72842 being exploited?
Not confirmed. CVE-2026-72842 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-72842?
CVE-2026-72842 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-72842?
Yes. A fix has been recorded for CVE-2026-72842. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-72842 affect?
CVE-2026-72842 affects OpenWrt routers with LuCI, luci-app-lxc, LXC containers on OpenWrt, LuCI web interface. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72842?
Restrict LuCI access, disable/remove luci-app-lxc, block web UI, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated low-priv user exploits path traversal in lxc_name to trigger lxc.hook.start-host, achieving root RCE on the OpenWrt host.
Immediate action required