EUVD-2026-94682
GHSA-756g-ccf7-9xr2
Severity by source
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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
Adjacent management network and authenticated low-priv account (AV:A/PR:L); 'specific environmental conditions' justify AC:H; impact is integrity-only (I:H, C:N/A:N) from admin-config access, same authority so S:U.
Primary rating from Vendor (brocade).
CVSS VectorVendor: brocade
Lifecycle Timeline
2DescriptionCVE.org
A logic vulnerability in Brocade Fabric OS versions before 10.0.1 web management framework allows an authenticated, low-privileged user to bypass inner Role-Based Access Control (RBAC) checks under specific environmental conditions. Successful exploitation lowers the system authorization mode for the active session context, allowing access to restricted configuration settings intended exclusively for administrative roles.
AnalysisAI
An authorization-logic bypass in the Brocade Fabric OS web management framework (all versions before 10.0.1) allows an authenticated, low-privileged user to circumvent inner Role-Based Access Control checks and lower the authorization mode of their active session, gaining access to configuration settings reserved for administrative roles. Exploitation is not trivial: it requires a valid low-privileged account, adjacent-network (management-plane) access, a vulnerable Fabric OS build, and the additional environmental conditions the vendor cites as the trigger; the weakness affects integrity only and does not by itself yield code execution or data disclosure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires (1) a valid authenticated low-privileged account on the Brocade Fabric OS web management framework (PR:L), (2) Adjacent-network access to the switch management plane (AV:A) rather than arbitrary internet routing, (3) a vulnerable version prior to Fabric OS 10.0.1, and (4) the 'specific environmental conditions' the vendor cites as necessary to trigger the inner RBAC-check bypass. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a MEDIUM-severity (CVSS 4.0 base 6.9) authorization-logic flaw, and the combined signals argue against treating it as an emergency. … 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 Brocade Fabric OS 10.0.1 or later: the affected range is explicitly defined as versions before 10.0.1, so the vendor-released patch is the 10.0.1 code line, and the authoritative upgrade guidance and any platform-specific patch notes are in the advisory at https://support.broadcom.com/external/content/SecurityAdvisories/0/39157. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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