What’s Vulnerable › Vulnerabilities

CVE-2026-59260: OpenWrt luci-app-samba4 read ACL remote code execution via smbd

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-12 · updated 2026-10-24
• Weakness: CWE-269

Description

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.

Affected products

• openwrt luci: before 24.10.8; from 25.12.0 before 25.12.5 — fixed in 24.10.8, 25.12.5

How to fix

Upgrade to a fixed version: openwrt luci 24.10.8, 25.12.5. Check the vendor advisory for mitigations.

References

• https://github.com/openwrt/luci/security/advisories/GHSA-vx64-mmp7-h36c
• https://www.vulncheck.com/advisories/openwrt-luci-app-samba4-read-acl-remote-code-execution-via-smbd
• https://github.com/openwrt/luci/security/advisories/GHSA-vx64-mmp7-h36c

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