CVE-2026-3343

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"baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "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": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "affectedData": [{"vendor": "WatchGuard", "product": "Fireware OS", "versions": [{"status": "affected", "version": "2025.1", "lessThan": "2026.1.2", "versionType": "custom"}, {"status": "affected", "version": "12.7", "lessThan": "12.11.8", "versionType": "custom"}], "platforms": ["Default"], "defaultStatus": "unaffected"}]}], "published": "2026-03-03T14:15:57.687", "references": [{"url": "https://psirt.watchguard.com/CVE-2026-3343", "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3"}, {"url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00004", "tags": ["Vendor Advisory"], "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "A reflected cross-site scripting (XSS) vulnerability in the Fireware OS Web UI enabled execution of malicious JavaScript in the context of an authenticated management user's browser when they click on a specially crafted link."}, {"lang": "es", "value": "Una vulnerabilidad de cross-site scripting (XSS) reflejada en la interfaz de usuario web de Fireware OS permiti\u00f3 la ejecuci\u00f3n de JavaScript malicioso en el contexto del navegador de un usuario de gesti\u00f3n autenticado cuando hacen clic en un enlace especialmente dise\u00f1ado.\n\nEsta vulnerabilidad afecta a Fireware OS 12.7 hasta e incluyendo 12.11.7 y 2025.1 hasta e incluyendo 2026.1.1."}], "lastModified": "2026-08-10T17:17:34.027", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A96DE7F-D807-4BC7-BECE-D0281939D36C", "versionEndExcluding": "12.11.8", "versionStartIncluding": "12.7"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:watchguard:firebox_m270:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E472917E-D6E1-4C2D-B37D-E76FCC7307CA"}, {"criteria": "cpe:2.3:h:watchguard:firebox_m290:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "9A8C7779-4466-4A9E-B191-929E7746DFF7"}, {"criteria": "cpe:2.3:h:watchguard:firebox_m370:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6CE9A123-B769-4E56-845E-DC3DA6166C78"}, {"criteria": "cpe:2.3:h:watchguard:firebox_m390:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "180FAE8C-2E73-4C09-AA11-0C82A7715FA3"}, {"criteria": 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