ZDI-26-776: QNAP TS-453E syslog log_message Format String Remote Code Execution Vulnerability
Published Oct 15, 2026
·Updated
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of QNAP TS-453E devices. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2018-10388, CVE-2018-10389.
Affected Software
1 affected component
QNAP TS-453E
Event History
Oct 15, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Who is exposed to this issue?
Affected QNAP TS-453E devices that are reachable by a network-adjacent attacker are exposed. The vulnerability does not require authentication.
2
What level of access does an attacker need to exploit it?
An attacker only needs network-adjacent access to the affected device. Successful exploitation can result in arbitrary code execution.
3
Which CVEs are associated with this vulnerability?
CVE-2018-10388 and CVE-2018-10389 are assigned to this issue.