CVE-2026-9863Network attack vector

Command execution via unneutralized client version data

Published Jun 15, 2026 · Updated Jun 15, 2026

OS command injection in Fortra BoKS Manager 8.1.0.0 through 8.1.0.22 and 9.0.0.0 through 9.0.0.4 allows remote attackers to execute commands. The boks_upgrade_upgrade and boks_upgrade_patch modules use version data supplied by a legacy tar-installed client during upgrade or patch handling without safely neutralizing shell command elements. Exploitation requires a malicious or compromised legacy tar-installed client to be selected for an operator-initiated upgrade or patch, and commands run on the BoKS Master.

CVSS severity7.5
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Fortra BoKS Manager 8.1.0.0 through 8.1.0.22 and 9.0.0.0 through 9.0.0.4 allows remote attackers to execute commands. The boks_upgrade_upgrade and boks_upgrade_patch modules use version data supplied by a legacy tar-installed client during upgrade or patch handling without safely neutralizing shell command elements. Exploitation requires a malicious or compromised legacy tar-installed client to be selected for an operator-initiated upgrade or patch, and commands run on the BoKS Master.

The record

CVE
CVE-2026-9863
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Fortra
Product
Core Privileged Access Manager (BoKS)
Classifications
CWE-78, CAPEC-248, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=boks-server 8.1.0.0 <=boks-server 8.1.0.22
  2. Affected versionversion=boks-server 9.0.0.0 <=boks-server 9.0.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fortra · Core Privileged Access Manager (BoKS)version=boks-server 8.1.0.0 <=boks-server 8.1.0.22; version=boks-server 9.0.0.0 <=boks-server 9.0.0.4

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5FortraCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-248Command Injection
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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