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Vulnerability record · CVE-2026-59260 · published 12 July 2026

CVE-2026-59260: Improper privilege management vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.68% · top 49.5% CWE-269 · Improper privilege management Deferred
8.7CVSS 4.0 base score
0.68%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
13 Jul 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-59260), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.