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CVE-2026-85649

Quick assessment

Affected
chewkeanho software-actualizer
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.

ChewKeanHo Actualizer是ChewKeanHo个人开发者开源的一个简单的单Shell脚本解决方案,用于从头开始创建Debian。 ChewKeanHo Actualizer 1.2.0及之前版本存在异常处理不当漏洞，该漏洞源于Shell/debian-minbase-install.sh脚本中Alpha和root用户密码循环未检查mkpasswd命令返回值并无条件接受结果，导致生成的密码哈希可能为空，进而可能允许无密码认证。

CVSS 7.9 · High EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1110.001 · Password Guessing

Affected Version Matrix 1

VendorProduct Version RangeStatus
chewkeanho software-actualizer ≤ 1.2.0 affected
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I. Basic Information for CVE-2026-85649

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
(Holloway) Chew, Kean Ho's Actualizer v1.2.0 and earlier contains a fail-open password validation vulnerability in the Alpha user and root user password loops of Shell/debian-minbase-install.sh. The installer invokes mkpasswd to generate yescrypt password hashes but does not check the command's return value and unconditionally accepts the result. If mkpasswd fails to generate a yescrypt hash, for example because an incompatible mkpasswd implementation or an environment without yescrypt support is used, the resulting password hash variable can be empty and the build proceeds. The resulting image can therefore contain empty password fields for the root and alpha accounts, potentially permitting passwordless authentication depending on the authentication configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
Source: CVE Program / CVE List V5
Vulnerability Title
ChewKeanHo Actualizer 异常处理不当漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ChewKeanHo Actualizer是ChewKeanHo个人开发者开源的一个简单的单Shell脚本解决方案,用于从头开始创建Debian。 ChewKeanHo Actualizer 1.2.0及之前版本存在异常处理不当漏洞，该漏洞源于Shell/debian-minbase-install.sh脚本中Alpha和root用户密码循环未检查mkpasswd命令返回值并无条件接受结果，导致生成的密码哈希可能为空，进而可能允许无密码认证。
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
chewkeanho software-actualizer 0 ~ 1.2.0 -

II. Public POCs for CVE-2026-85649

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III. Intelligence Information for CVE-2026-85649

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Patches & Fixes for CVE-2026-85649 (1)

Vendor Pages for CVE-2026-85649 (1)

Other References for CVE-2026-85649 (1)

IV. Related Vulnerabilities

Same vendor: chewkeanho
Same weakness: CWE-636

V. Comments for CVE-2026-85649

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