{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3343", "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "state": "PUBLISHED", "assignerShortName": "WatchGuard", "dateReserved": "2026-02-27T15:37:10.115Z", "datePublished": "2026-03-03T13:17:48.810Z", "dateUpdated": "2026-03-03T13:17:48.810Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Fireware OS", "vendor": "WatchGuard", "versions": [{"lessThanOrEqual": "12.11.7", "status": "affected", "version": "12.7", "versionType": "semver"}, {"lessThanOrEqual": "2026.1.1", "status": "affected", "version": "2025.1", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:12.7", "versionEndIncluding": "12.11.7", "versionStartIncluding": "12.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:2025.1", "versionEndIncluding": "2026.1.1", "versionStartIncluding": "2025.1", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "credits": [{"lang": "en", "type": "finder", "value": "btaol"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "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.<br><br><div><div>This vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.</div></div>"}], "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.\n\nThis vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1."}], "exploits": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "WatchGuard is not aware of any exploitation of this issue in the wild."}], "value": "WatchGuard is not aware of any exploitation of this issue in the wild."}], "impacts": [{"capecId": "CAPEC-591", "descriptions": [{"lang": "en", "value": "CAPEC-591 Reflected XSS"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 5.1, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "shortName": "WatchGuard", "dateUpdated": "2026-03-03T13:17:48.810Z"}, "references": [{"url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0004"}], "source": {"advisory": "WGSA-2026-00004", "defect": ["FBX-31282"], "discovery": "EXTERNAL"}, "title": "WatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI", "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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{"cveTags": [], "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.\n\nThis vulnerability affects Fireware OS 12.7 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1."}], "id": "CVE-2026-3343", "lastModified": "2026-03-03T14:15:57.687", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "type": "Secondary"}]}, "published": "2026-03-03T14:15:57.687", "references": [{"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-0004"}], "sourceIdentifier": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "type": "Secondary"}]}

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