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CVE-2026-11554— TOTOLINK CP450 vsftpd vsftpd.conf least privilege violation

Quick assessment

Affected
TOTOLINK CP450
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.

TOTOLINK CP450是中国吉翁电子（TOTOLINK）公司的一款户外无线客户终端设备。主要用于提供无线宽带接入服务，尤其适用于农村或偏远地区的无线网络覆盖。 TOTOLINK CP450 4.1.0cu.747版本存在安全漏洞，该漏洞源于vsftpd组件中/etc/vsftpd.conf文件的未知代码操作不当，可能导致违反最小权限原则。攻击者可远程发起攻击。

CVSS 4.3 · Medium EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
TOTOLINK CP450 4.1.0cu.747 affected
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I. Basic Information for CVE-2026-11554

Vulnerability Information
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Vulnerability Title
TOTOLINK CP450 vsftpd vsftpd.conf least privilege violation
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in TOTOLINK CP450 4.1.0cu.747. This vulnerability affects unknown code of the file /etc/vsftpd.conf of the component vsftpd. This manipulation causes least privilege violation. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
最小特权原则违背
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK CP450 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK CP450是中国吉翁电子（TOTOLINK）公司的一款户外无线客户终端设备。主要用于提供无线宽带接入服务，尤其适用于农村或偏远地区的无线网络覆盖。 TOTOLINK CP450 4.1.0cu.747版本存在安全漏洞，该漏洞源于vsftpd组件中/etc/vsftpd.conf文件的未知代码操作不当，可能导致违反最小权限原则。攻击者可远程发起攻击。
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
TOTOLINK CP450 4.1.0cu.747 cpe:2.3:o:totolink:cp450_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-11554

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III. Intelligence Information for CVE-2026-11554

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Security Blog Posts for CVE-2026-11554 (1)

IV. Related Vulnerabilities

Same product: CP450
Same vendor: TOTOLINK
Same weakness: CWE-272

V. Comments for CVE-2026-11554

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