CVE-2026-85649

(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.

CVSS v3 7.9 HIGH

7.9^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.5 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://doi.org/10.5281/zenodo.22169659
https://github.com/ChewKeanHo/software-actualizer/blob/v1.2.0/Shell/debian-minbase-install.sh#L788
https://github.com/ChewKeanHo/software-actualizer/commit/50a0932ac705635d9af62955c353e7c6df003a61.patch
https://github.com/ChewKeanHo/software-actualizer/releases/tag/v1.2.1

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-04 13:20

Updated : 2026-09-08 14:11

NVD link : CVE-2026-85649

Mitre link : CVE-2026-85649

CVE.ORG link : CVE-2026-85649

JSON object : View

Products Affected

No product.

CWE

CWE-252

Unchecked Return Value

CWE-636

Not Failing Securely ('Failing Open')

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