CVE-2026-59260 | THREATINT

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.

PUBLISHED Reserved 2026-07-04 | Published 2026-07-12 | Updated 2026-07-14 | Assigner VulnCheck

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Privilege Management

Product status

Default status

affected

Credits

ZwCrazyThursday reporter

References

github.com/...t/luci/security/advisories/GHSA-vx64-mmp7-h36c exploit

github.com/...t/luci/security/advisories/GHSA-vx64-mmp7-h36c (GitHub Security Advisory (GHSA-vx64-mmp7-h36c)) vendor-advisory

www.vulncheck.com/...read-acl-remote-code-execution-via-smbd (VulnCheck Advisory: OpenWrt luci-app-samba4 read ACL remote code execution via smbd) third-party-advisory

cve.org (CVE-2026-59260)

nvd.nist.gov (CVE-2026-59260)

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