CVE-2026-94581

Root command execution via known-host parameter injection

Published Oct 8, 2026 · Updated Oct 8, 2026

OS command injection in Brocade Fabric OS before 9.2.2d and 10.0.0 through 10.0.0a1 lets remote authenticated users run root commands via REST. The REST API handler for SSH known-host configuration passes crafted parameter values containing shell metacharacters into a system command. Exploitation requires administrative permission to configure SSH known hosts; successful injection runs commands with root privileges on the switch.

CVSS severity8.5
High
EPSS probability1.46%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Brocade Fabric OS before 9.2.2d and 10.0.0 through 10.0.0a1 lets remote authenticated users run root commands via REST. The REST API handler for SSH known-host configuration passes crafted parameter values containing shell metacharacters into a system command. Exploitation requires administrative permission to configure SSH known hosts; successful injection runs commands with root privileges on the switch.

The record

CVE
CVE-2026-94581
Published
Oct 8, 2026
Updated
Oct 8, 2026
Vendor
Brocade Communications Systems
Product
Fabric OS
Classifications
CWE-78, T1059.004
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Oct 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <9.2.2d
  2. Affected versionversion=10.0.0 <=10.0.0a1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Brocade Communications Systems · Fabric OSversion=0 <9.2.2d; version=10.0.0 <=10.0.0a1

Published CVSS scores

8.5Brocade Communications SystemsCVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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