CVE-2026-18187

High

Description

A format string vulnerability was found in the Internal Backup on the ADM. The vulnerability occurs because user-controlled task input may be included in an error response and processed through an unsafe format string operation. An authenticated attacker can exploit this issue to disclose memory information or cause denial of service of the affected CGI process. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RUN1 as well as from ADM 5.0.0 through ADM 5.1.3.RI81.

SeverityHigh

CVSS8.1

Exploit probability40. percentile0.5%

ProductAsustor Data Master

PublishedJul 30, 2026

First seenJul 30, 2026

Weakness typeCWE-134CWE-134

How to fix

Update

asustor data_master5.1.4.rjv2 or later

Vendor advisories

asustor.com/security/security_advisory_detail?id=67

Affected products

Product	Affected versions	Fixed in
asustor data_master	4.1.0.rhu2 ≤ v ≤ 4.3.3.run1, 5.0.0.ra82 ≤ v < 5.1.4.rjv2	5.1.4.rjv2

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