Fortra BoKS Server Agent adjoin machine-account password generation vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9864
StatePUBLISHED
AssignerFortra
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-01 16:18:09 UTC
Updated2026-10-01 20:34:26 UTC
DescriptionFortra 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.

Risk And Classification

Primary CVSS: v3.1 4.8 MEDIUM from df4dee71-de3a-4139-9588-11b62fe6c0ff

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem Types: CWE-338 | CWE-338 CWE-338 Use of cryptographically weak Pseudo-Random number generator (PRNG)

VersionSourceTypeScoreSeverityVector
3.1df4dee71-de3a-4139-9588-11b62fe6c0ffSecondary4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNACVSS4.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fortra Core Privileged Access Manager BoKS affected 8.1.0.0 8.1.0.29 custom Not specified
CNA Fortra Core Privileged Access Manager BoKS affected 9.0.0.0 9.0.0.5 custom Not specified

References

ReferenceSourceLinkTags
www.fortra.com/security/advisories/product-security/fi-2026-018 df4dee71-de3a-4139-9588-11b62fe6c0ff www.fortra.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: 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.

Workarounds

CNA: 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.

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