CVE-2026-9864

Fortra BoKS Server Agent adjoin machine-account password generation vulnerability

Published Oct 1, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.

Remediation

Vendor Solution

Upgrade to a fixed boks-client release newer than 8.1.0.29 or 9.0.0.5, then rotate machine-account passwords generated by affected versions.


Vendor Workaround

Until fixed builds are deployed, avoid running adjoin join or autoupdate operations from affected versions. If automatic machine-account password renewal is enabled, disable it temporarily or ensure renewed passwords are rotated again after upgrading to a fixed version.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Fortra
Fortra core Privileged Access Manager (boks)
Vendors & Products Fortra
Fortra core Privileged Access Manager (boks)
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Fortra BoKS Server Agent contains a predictable password generation vulnerability in the adjoin utility. Machine-account passwords generated during Active Directory join or password renewal operations may have significantly less entropy than intended, making them more susceptible to prediction by an attacker who can estimate when the password was generated.
Title Fortra BoKS Server Agent adjoin machine-account password generation vulnerability
Weaknesses CWE-338
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Fortra
Published
Updated
Oct 1, 2026, 4:16 PM
Reserved
May 28, 2026, 4:37 PM
Status
Awaiting Analysis
Published
Oct 1, 2026, 4:18 PM
Modified
Oct 1, 2026, 8:34 PM