# CVE-2026-9864: Fortra BoKS Server Agent predictable password generation in adjoin

Source: https://junglewise.ai/threats/cve-2026-9864-fortra-boks-server-agent-contains-a-predictable-password  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-01. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-9864 · Severity: medium · CVSS 4.8 · Published 2026-10-01

Fortra BoKS Server Agent is a privileged access management tool that manages machine accounts in Active Directory. A vulnerability in its adjoin utility generates machine-account passwords with insufficient entropy, allowing an attacker with knowledge of when a password was created to predict it and gain unauthorized access to accounts.

Vendors: [Fortra](https://junglewise.ai/threats/vendors/fortra).

## Quick answers

**Is CVE-2026-9864 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9864 being exploited in the wild.

**How severe is CVE-2026-9864?** Medium severity, with a CVSS score of 4.8, published 1 October 2026.

**Which products and versions are affected?** Fortra BoKS Server Agent.

**Is there a fix for CVE-2026-9864?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9864 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-9864?** Check whether you run Fortra BoKS Server Agent. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The adjoin utility in BoKS Server Agent uses a weak password generation algorithm when creating or renewing machine-account passwords during Active Directory join operations. An attacker who can estimate the generation timestamp can feasibly predict the resulting password through brute-force enumeration, circumventing the intended security of machine-account credentials.

## Affected products

- Fortra BoKS Server Agent

## Timeline

- 2026-10-01: disclosed

## References

- [https://www.fortra.com/security/advisories/product-security/fi-2026-018](https://www.fortra.com/security/advisories/product-security/fi-2026-018)