# CVE-2026-9863 — Fortra Core Privileged Access Manager (BoKS)

> As of 2026-06-15, CVE-2026-9863 is a HIGH-severity vulnerability in Fortra Core Privileged Access Manager (BoKS), CVSS v3.1 7.5, EPSS 1.0% (62.0th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-9863, most recently “CVE-2026-9862: Unauthenticated OS Command Injection in Fortra Core Privileged Access Manager (BoKS) boks_autoregisterd”.

**Last updated:** 2026-06-15

## What is CVE-2026-9863?

Fortra BoKS Manager contains an OS command injection vulnerability in the client upgrade and patch tooling for legacy tar-based client installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may be able to cause commands to be executed on the BoKS Master during client version handling.

The record classifies CVE-2026-9863 under weakness class [CWE-78](https://intel.threadlinqs.com/cwe/CWE-78). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 130 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.5 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 1.0% probability of exploitation in the next 30 days, higher than 62.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-15

## Is CVE-2026-9863 being exploited?

It currently carries a trending score of 21 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Fortra](https://intel.threadlinqs.com/vendors/fortra): Core Privileged Access Manager (BoKS)

## How to fix CVE-2026-9863

Vendor advisory: [https://www.fortra.com/security/advisories/product-security/fi-2026-008](https://www.fortra.com/security/advisories/product-security/fi-2026-008). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2026-9863

1 tracked threat in the Threadlinqs corpus references CVE-2026-9863, either in the campaign’s CVE list or as an indicator on the campaign record.

- [CVE-2026-9862: Unauthenticated OS Command Injection in Fortra Core Privileged Access Manager (BoKS) boks_autoregisterd](https://intel.threadlinqs.com/threat/TL-2026-0885) — CRITICAL · 2026-06-20

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [fortra.com — vendor advisory](https://www.fortra.com/security/advisories/product-security/fi-2026-008)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-9863
Full detection coverage and IOCs for threats exploiting CVE-2026-9863 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp