Stack-based Buffer Overflow in REST API device management component of Brocade Fabric OS
39077
06 October 2026
06 October 2026
CLOSED
HIGH
8.6 - CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2026-87683
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Brocade Security Advisory ID |
BSA-2026-3961 |
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Component |
Fabric OS REST API |
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CWE |
CWE-121: Stack-based Buffer Overflow |
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Summary:
Multiple stack-based buffer overflow vulnerabilities exist in the REST API management component of Brocade Fabric OS versions prior to 10.0.1. When processing API request payloads—such as device configuration attributes or port mapping requests—the REST API service fails to properly validate incoming array counts and string lengths against internal buffer capacities. An authenticated attacker with REST API access can transmit crafted, oversized request parameters to induce memory corruption on the execution stack. This may result in a denial-of-service condition (daemon crash) or potential arbitrary code execution within the management process context.
Products Affected
- Brocade Fabric OS versions before 10.0.1
Products Not Affected
- Brocade SANnav is not affected by this vulnerability
[VEX Justification: Component_not_present] - Brocade ASCG is not affected by this vulnerability
[VEX Justification: Component_not_present]
Solution
- A security update is provided in Brocade Fabric OS 10.0.1
Note: This is a Frontier AI discovered vulnerability.
Revision History
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Version |
Change |
Date |
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1.0 |
Initial Publication |
October 6, 2026 |
Disclaimer
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