CVE-2026-94587

Management daemon crash via configuration-transfer stack overflow

Published Oct 8, 2026 · Updated Oct 8, 2026

Stack buffer overflow in WebTools on Brocade Fabric OS before 9.2.2d and 10.0.0 through 10.0.0a1 lets remote authenticated users crash weblinker. The configuration-download or file-transfer handler overflows a stack buffer while processing remote server profile input; Broadcom does not identify the exact parameter or copying routine. Exploitation requires permission to download configurations using remote server profiles, and the established consequence is a management-daemon crash rather than a switch reboot.

CVSS severity6.9
Medium
EPSS probability0.19%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in WebTools on Brocade Fabric OS before 9.2.2d and 10.0.0 through 10.0.0a1 lets remote authenticated users crash weblinker. The configuration-download or file-transfer handler overflows a stack buffer while processing remote server profile input; Broadcom does not identify the exact parameter or copying routine. Exploitation requires permission to download configurations using remote server profiles, and the established consequence is a management-daemon crash rather than a switch reboot.

The record

CVE
CVE-2026-94587
Published
Oct 8, 2026
Updated
Oct 8, 2026
Vendor
Brocade Communications Systems
Product
Fabric OS
Classifications
CWE-120, T1499.004
Attack vector
adjacent
Privileges
authenticated

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 privilegesauthenticated

What is affected?

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

Published CVSS scores

6.9Brocade Communications SystemsCVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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