Review reviewHigh

CVE-2026-18187

ASUSTOR Inc. ADM, data master

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.

CVSS: 7.1
EPSS: 0.27%
CISA KEV: Not listed
Published: 2026.07.30

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.27%

Technical severityCVSS 7.1

Vulnerability overview

Affected product and versions

Product: ASUSTOR Inc. ADM, data master
Affected versions: >= 5.0.0 <= 5.1.3.RI81, >= 4.1.0 <= 4.3.3.RUN1, >= 4.1.0.rhu2 <= 4.3.3.run1, >= 5.0.0.ra82 < 5.1.4.rjv2
Fixed versions: 5.1.4.rjv2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that ASUSTOR Inc. ADM, data master and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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:X/V:X/RE:X/U:X
CWE: CWE-134