What is CVE-2026-59260?

CVE-2026-59260 is a high-severity vulnerability in Openwrt Luci, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-07-12.

How severe is CVE-2026-59260?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in Openwrt Luci

CVE-2026-59260

OpenWrt luci-app-samba4 read ACL grants file.exec permission on /usr/sbin/smbd, allowing authenticated delegated users to execute the Samba daemon with caller-controlled command-line arguments. Attackers can pass arbitrary Samba global options such as message command to a root smbd process, triggering command execution when SMB protocol messages are processed.

Vulnerability class: Privilege Escalation

Published 2026-07-12 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.0th percentile), scored 2026-11-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Openwrt Luci

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

github.com/openwrt/luci/security/advisories/GHSA-vx64-mmp7-h36c (vendor-advisory)
www.vulncheck.com/advisories/openwrt-luci-app-samba4-read-acl-remote-code-execu… (third-party-advisory)

Frequently asked questions

What is CVE-2026-59260?: CVE-2026-59260 is a high-severity vulnerability in Openwrt Luci, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-07-12.
How severe is CVE-2026-59260?: High severity. CVSS v3 base score is 8.8 out of 10.