CVE-2026-87666

An OS command injection vulnerability exists in the time and zone management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When updating system timezone settings via the REST API or configuration download routines, the system fails to sanitize input values before processing them in underlying shell execution routines. An authenticated user with low-privilege administrative access can exploit this vulnerability by submitting a crafted timezone string containing shell metacharacters. Successful exploitation allows the attacker to escape the restricted management environment and execute arbitrary shell commands with elevated privileges.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.broadcom.com/external/content/SecurityAdvisories/0/39149	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:broadcom:fabric_operating_system::::::::
	cpe:2.3:o:broadcom:fabric_operating_system::::::::

History

14 Oct 2026, 19:14

Type	Values Removed	Values Added
First Time		Broadcom fabric Operating System Broadcom
CPE		cpe:2.3:o:broadcom:fabric_operating_system::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.0
References	~~() https://support.broadcom.com/external/content/SecurityAdvisories/0/39149 -~~	() https://support.broadcom.com/external/content/SecurityAdvisories/0/39149 - Vendor Advisory

08 Oct 2026, 04:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 04:17

Updated : 2026-10-14 19:14

NVD link : CVE-2026-87666

Mitre link : CVE-2026-87666

CVE.ORG link : CVE-2026-87666

JSON object : View

Products Affected

broadcom

fabric_operating_system

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2026-87666", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-87666", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-08T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}], "cvssMetricV40": [{"type": "Secondary", "source": "sirt@brocade.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.6, "Automatable": "NOT_DEFINED", "attackVector": "ADJACENT", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "sirt@brocade.com", "affectedData": [{"vendor": "Brocade", "product": "Fabric OS", "versions": [{"status": "affected", "version": "0", "lessThan": "9.2.2d", "versionType": "Brocade FabricOS"}, {"status": "affected", "version": "10.0.0", "versionType": "Brocade FabricOS", "lessThanOrEqual": "10.0.0a1"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-08T04:17:52.553", "references": [{"url": "https://support.broadcom.com/external/content/SecurityAdvisories/0/39149", "tags": ["Vendor Advisory"], "source": "sirt@brocade.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "sirt@brocade.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "An OS command injection vulnerability exists in the time and zone management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When updating system timezone settings via the REST API or configuration download routines, the system fails to sanitize input values before processing them in underlying shell execution routines. An authenticated user with low-privilege administrative access can exploit this vulnerability by submitting a crafted timezone string containing shell metacharacters. Successful exploitation allows the attacker to escape the restricted management environment and execute arbitrary shell commands with elevated privileges."}], "lastModified": "2026-10-14T19:14:40.353", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0A4C19A-95A3-4581-9012-4B107782D0A5", "versionEndExcluding": "9.2.2d"}, {"criteria": "cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FF02C61C-2FA4-489E-812F-A6F390E3C663", "versionEndExcluding": "10.0.1", "versionStartIncluding": "10.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "sirt@brocade.com"}