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CVE-2026-18186— A stored format string vulnerability was found in the FTP Backup on the ADM

Quick assessment

Affected
ASUSTOR Inc. ADM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ASUSTOR adm是中国ASUSTOR公司的一套NAS设备管理软件。 ASUSTOR ADM 4.1.0版本至4.3.3.RUN1版本和5.0.0版本至5.1.3.RI81版本存在格式化字符串错误漏洞，该漏洞源于用户控制的备份配置数据可能被写入任务日志并通过不安全的格式化字符串操作处理，可能导致经过身份验证的攻击者披露内存信息或导致拒绝服务。

CVSS 7.1 · High EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 2

VendorProduct Version RangeStatus
ASUSTOR Inc. ADM 5.0.0≤ 5.1.3.RI81 affected
4.1.0≤ 4.3.3.RUN1 affected
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I. Basic Information for CVE-2026-18186

Vulnerability Information
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Vulnerability Title
A stored format string vulnerability was found in the FTP Backup on the ADM
Source: CVE Program / CVE List V5
Vulnerability Description
A stored format string vulnerability was found in the FTP Backup on the ADM. The vulnerability occurs because user-controlled backup configuration data may be written into a task log and later 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5
Vulnerability Title
ASUSTOR ADM 格式化字符串错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ASUSTOR adm是中国ASUSTOR公司的一套NAS设备管理软件。 ASUSTOR ADM 4.1.0版本至4.3.3.RUN1版本和5.0.0版本至5.1.3.RI81版本存在格式化字符串错误漏洞，该漏洞源于用户控制的备份配置数据可能被写入任务日志并通过不安全的格式化字符串操作处理，可能导致经过身份验证的攻击者披露内存信息或导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ASUSTOR Inc. ADM 5.0.0 ~ 5.1.3.RI81 -

II. Public POCs for CVE-2026-18186

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III. Intelligence Information for CVE-2026-18186

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Vendor Advisories for CVE-2026-18186 (1)

Same Patch Batch · ASUSTOR Inc. · 2026-07-30 · 8 CVEs total

CVE-2026-67248 8.7 HIGH A stack-based buffer overflow vulnerability was found in the File Explorer on the ADM
CVE-2026-67244 8.6 HIGH A format string vulnerability was found in the Notification OAuth settings of ADM
CVE-2026-18188 7.1 HIGH A format string vulnerability was found in the Rsync Backup on the ADM
CVE-2026-18187 7.1 HIGH A format string vulnerability was found in the Internal Backup on the ADM
CVE-2026-67247 7.1 HIGH A path traversal vulnerability was found in the IHM Log handling of ADM
CVE-2026-67245 7.0 HIGH A path traversal vulnerability was found in the VPN Clients on the ADM
CVE-2026-67246 6.9 MEDIUM A path traversal vulnerability was found in the Wallpaper component of ADM

IV. Related Vulnerabilities

Same product: ADM
Same vendor: ASUSTOR Inc.
Same weakness: CWE-134

V. Comments for CVE-2026-18186

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