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Brocade Fabric OS CVE-2026-94587

| EUVDEUVD-2026-94732 MEDIUM
Classic Buffer Overflow (CWE-120)
2026-10-08 brocade GHSA-m2ph-j5qr-j44m
6.9
CVSS 4.0 · Vendor: brocade
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Severity by source

Vendor (brocade) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.2 MEDIUM

Adjacent management access (AV:A) and no complex conditions (AC:L); requires high-privilege config-download rights (PR:H); crash yields A:H, minor I:L, no confidentiality (C:N).

3.1 AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
4.0 AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (brocade).

CVSS VectorVendor: brocade

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
Oct 08, 2026 - 06:01 EUVD
Analysis Generated
Oct 08, 2026 - 05:35 vuln.today

DescriptionCVE.org

A buffer overflow vulnerability exists in the WebTools administrative interface handling configuration download or file transfer operations of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An authenticated user with permissions to perform configuration downloads using remote server profiles can overflow stack buffers causing a crash of the weblinker daemon.

AnalysisAI

Stack buffer overflow in Brocade Fabric OS WebTools administrative interface allows an authenticated user with permissions to perform configuration downloads using remote server profiles to crash the weblinker daemon, resulting in a privileged denial of service. Affected versions are Fabric OS before 9.2.2d and 10.0.0 through 10.0.0a1. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated user holding the specific permission to perform configuration downloads using remote server profiles within the Brocade Fabric OS WebTools administrative interface; the overflow is triggered through the config-download / file-transfer code path of the weblinker daemon. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a moderate-severity, low-priority issue that should not be mistaken for a critical remote threat despite the buffer-overflow classification (CWE-120). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch: Fabric OS 9.2.2d and later for the 9.x branch; for the 10.x branch, upgrade to a version later than 10.0.0a1 as specified in the Broadcom advisory (https://support.broadcom.com/external/content/SecurityAdvisories/0/39136). … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-94587 vulnerability details – vuln.today

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