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CVE-2026-3100— An improper certificate validation vulnerability was found in the FTP Backup on the ADM.

Quick assessment

Affected
ASUSTOR 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是中国华芸科技（ASUSTOR）公司的一种所有 ASUSTOR NAS 设备的专用操作系统。 ASUSTOR ADM 4.1.0版本至4.3.3.ROF1版本和5.0.0版本至5.1.2.RE51版本存在安全漏洞，该漏洞源于FTP备份功能未严格验证TLS证书，可能导致中间人攻击，从而拦截、修改或获取敏感信息。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.27% · P18
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I. Basic Information for CVE-2026-3100

Vulnerability Information
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Vulnerability Title
An improper certificate validation vulnerability was found in the FTP Backup on the ADM.
Source: CVE Program / CVE List V5
Vulnerability Description
The FTP Backup on the ADM will not properly strictly enforce TLS certificate verification while connecting to an FTP server using FTPES/FTPS. An improper validated TLS/SSL certificates allows a remote attacker can intercept network traffic to perform a Man-in-the-Middle (MitM) attack, which may intercept, modify, or obtain sensitive information such as authentication credentials and backup data. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.2.RE51.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ASUSTOR ADM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ASUSTOR ADM是中国华芸科技（ASUSTOR）公司的一种所有 ASUSTOR NAS 设备的专用操作系统。 ASUSTOR ADM 4.1.0版本至4.3.3.ROF1版本和5.0.0版本至5.1.2.RE51版本存在安全漏洞，该漏洞源于FTP备份功能未严格验证TLS证书，可能导致中间人攻击，从而拦截、修改或获取敏感信息。
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 ADM 4.1.0 ~ 4.3.3.ROF1 -

II. Public POCs for CVE-2026-3100

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III. Intelligence Information for CVE-2026-3100

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Vendor Advisories for CVE-2026-3100 (1)

IV. Related Vulnerabilities

Same product: ADM
Same vendor: ASUSTOR
Same weakness: CWE-295

V. Comments for CVE-2026-3100

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