CVE-2026-59260
Authenticated LuCI/Samba4 flaw lets delegated users execute root smbd with attacker args
Is CVE-2026-59260 being exploited?
Not confirmed. CVE-2026-59260 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 0.68% probability of exploitation in the next 30 days.
How severe is CVE-2026-59260?
CVE-2026-59260 is rated High with a CVSS score of 8.7. 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-2026-59260?
Yes. A fix has been recorded for CVE-2026-59260. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-59260 affect?
CVE-2026-59260 affects OpenWrt routers with luci-app-samba4 installed, Samba smbd on affected OpenWrt devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-59260?
Disable luci-app-samba4 or remove file.exec delegation; restrict LuCI access; apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated delegated user can run /usr/sbin/smbd with attacker-controlled options, enabling root remote command execution via SMB message processing.
Immediate action required