CVE-2026-3342
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.
This vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
- Puntuación base: 8.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.70%
- Percentil entre todas las CVEs puntuadas: 52
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation80 %
Acceso remoto autenticado (PR:H) a interfaz de gestión expuesta. El atacante con privilegios de admin remoto ejecuta código arbitrario (CWE-787) con permisos root via T1210. Impacto: ejecución de comandos (T1059) y escalada de privilegios (T1068).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-787
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-3342",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3342",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-03-03T00:00:00+00:00"
}
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.2,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.2
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"cvssData": {
"Safety": "NOT_DEFINED",
"version": "4.0",
"Recovery": "NOT_DEFINED",
"baseScore": 8.6,
"Automatable": "NOT_DEFINED",
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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": "HIGH",
"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": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"affectedData": [
{
"vendor": "WatchGuard",
"product": "Fireware OS",
"versions": [
{
"status": "affected",
"version": "11.9",
"versionType": "semver",
"lessThanOrEqual": "11.12.4+541730"
},
{
"status": "affected",
"version": "12.0",
"versionType": "semver",
"lessThanOrEqual": "12.11.7"
},
{
"status": "affected",
"version": "12.5",
"versionType": "semver",
"lessThanOrEqual": "12.5.16"
},
{
"status": "affected",
"version": "2025.1",
"versionType": "semver",
"lessThanOrEqual": "2026.1.1"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-03-03T14:15:56.643",
"references": [
{
"url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00003",
"tags": [
"Vendor Advisory"
],
"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An Out-of-bounds Write vulnerability in WatchGuard Fireware OS may allow an authenticated privileged administrator to execute arbitrary code with root permissions via an exposed management interface.\n\nThis vulnerability affects Fireware OS 11.9 up to and including 11.12.4_Update1, 12.0 up to and including 12.11.7 and 2025.1 up to and including 2026.1.1."
},
{
"lang": "es",
"value": "Una vulnerabilidad de escritura fuera de límites en WatchGuard Fireware OS podría permitir a un administrador privilegiado autenticado ejecutar código arbitrario con permisos de root a través de una interfaz de gestión expuesta.\n\nEsta vulnerabilidad afecta a Fireware OS 11.9 hasta e incluyendo 11.12.4_Update1, 12.0 hasta e incluyendo 12.11.7 y 2025.1 hasta e incluyendo 2026.1.1."
}
],
"lastModified": "2026-06-17T10:43:26.403",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C85F0872-60E1-4E8B-B27E-35EFCA127ECA",
"versionEndExcluding": "12.5.17",
"versionStartIncluding": "12.5"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:watchguard:firebox_t15:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "626220F8-7F0C-4DD8-8001-12EA0A777A0D"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t35:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E561A57F-91A5-4B3C-9F7D-62E9AB5163A7"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4D0AAD6D-2794-444D-9866-3E81B1EE2E26",
"versionEndExcluding": "2026.1.2",
"versionStartIncluding": "2025.1"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:watchguard:firebox_m295:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "615FF2CF-69DA-4890-9236-52D8D6FA0E71"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m395:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A3439409-2FD6-447B-91CF-17D1C09E2A79"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m495:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "C0C0412F-AB02-4D13-B159-D0FCD2ECA3ED"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m595:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "575CC5EE-0278-489B-AA95-5EC5058D6FB9"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m695:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "5597F672-3C72-4BCF-AD3F-F16B6913EC2F"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t115-w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E8AAE66B-DD19-4C90-8DFC-F77BA1541642"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t125:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7FC18430-C6B4-4395-BFF1-83BB005875BA"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t125-w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1A7C1C91-8B6E-4FB0-841E-7F88B06B1435"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t145:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8FE309D6-BD5E-4D18-91C3-A492C3576115"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t145-w:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "75959D39-0960-4836-96C7-DB8048DDE4B8"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t185:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D0087049-27C6-4B18-A645-72A8F63D7C6D"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0CBAF641-9DCB-4C7F-AA57-05B444453556",
"versionEndExcluding": "12.11.8",
"versionStartIncluding": "11.9"
}
],
"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": "cpe:2.3:h:watchguard:firebox_m440:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "309DBEF2-1D92-4641-827F-D99758B5FFA3"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m4600:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D1E8CFC5-51FE-4D75-845F-D70C30AF11B0"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m470:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "BBFBA966-E052-4350-9544-3B5D484DBB6B"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m4800:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "EF1E586D-0E88-447A-95E8-5203EF869ADB"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m5600:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1BC087C4-CB10-46D4-A746-0C462354410C"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m570:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "59389EA2-3067-4AF8-AEC5-FE79E269C170"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m5800:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "445FA7CD-D0AE-4176-9AE5-293B918DE654"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m590:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1B4A7366-0304-431E-B3E4-719BA575CEAC"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m670:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E8512B4A-5269-4067-B9C6-475A4E8AD313"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_m690:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "179C6166-87E1-44F8-B727-CDDE40C673D9"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_nv5:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "584107CC-6136-4AA1-AE68-73B93BDDB5B6"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t20:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9295217E-C1A0-4A69-A0F0-C44814BB376C"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t25:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7DC49246-2166-4681-8D67-4C0940884872"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t40:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "CC853916-8BDC-4F7C-BA53-D6AB490A9444"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t45:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DCB1A254-DA3C-4032-B2C6-C9EBCE8EC15E"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t55:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D3562304-0317-4A3C-B622-D5CE01CC97F9"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t70:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "327BA50A-366A-4367-93B8-328EC0136FA7"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t80:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D92ABD52-20F6-4AB1-801F-9E7B7B1B78A1"
},
{
"criteria": "cpe:2.3:h:watchguard:firebox_t85:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3552F3BB-8021-4E87-987D-870699A7E619"
},
{
"criteria": "cpe:2.3:h:watchguard:fireboxcloud:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "158560A0-D694-41AF-A5F8-0F6FB3EFB8FA"
},
{
"criteria": "cpe:2.3:h:watchguard:fireboxv:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "4ECAE1D7-9868-4730-B645-44CB1B6FDE96"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "5d1c2695-1a31-4499-88ae-e847036fd7e3"
}