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Brocade Fabric OS EUVDEUVD-2026-94735

| CVE-2026-87661 MEDIUM
Improper Neutralization of CRLF Sequences ('CRLF Injection') (CWE-93)
2026-10-08 brocade GHSA-mxfh-hfg3-4hfp
6.8
CVSS 4.0 · Vendor: brocade
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Severity by source

Vendor (brocade) PRIMARY
6.8 MEDIUM
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/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
4.5 MEDIUM

Adjacent reachability (AV:A) and high pre-existing privilege (PR:H) are required to corrupt the config; impact is availability-only (A:H) with no confidentiality or integrity effect.

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

3
Patch available
Oct 08, 2026 - 06:01 EUVD
Analysis Generated
Oct 08, 2026 - 05:38 vuln.today
CVE Published
Oct 08, 2026 - 04:31 cve.org
MEDIUM 6.8

DescriptionCVE.org

Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration file data during service setup or re-initialization. An attacker capable of corrupting the configuration structure will prevent the web management service from starting or recovering during service bring-up, leading to a persistent Denial of Service (DoS) of the administrative web interface.

AnalysisAI

Malformed Apache configuration data accepted by Brocade Fabric OS during web management service setup or re-initialization can corrupt the stored configuration and prevent the administrative web interface from starting or recovering, producing a persistent denial of service that recurs on each service bring-up. Exploitation requires an attacker who already holds high administrative privileges on the switch and can reach it from an adjacent network segment (assessed CVSS:3.1 AV:A/AC:L/PR:H/UI:N, availability-only impact), and no public exploit code was identified at time of analysis. …

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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 the attacker to already hold HIGH administrative privileges on the Brocade Fabric OS device (PR:H) and to reach it from an adjacent network segment (AV:A), then supply malformed Apache configuration file data during web management service setup or re-initialization. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a moderate, privilege-gated availability issue rather than a top-tier priority. … 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 Upgrade to the fixed Fabric OS release: the vendor advisory scopes affected code to versions before 9.2.2d and to 10.0.0 through 10.0.0a1, so install Fabric OS 9.2.2d or later on the 9.x branch and consult Broadcom advisory 39160 (https://support.broadcom.com/external/content/SecurityAdvisories/0/39160) for the exact patched 10.0.0 build that supersedes 10.0.0a1 before scheduling maintenance. … 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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EUVD-2026-94735 vulnerability details – vuln.today

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