CVE-2025-8833
Estado: AnalizadaAlta (7.4)—
A vulnerability was identified in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. This issue affects the function langSwitchBack of the file /goform/langSwitchBack. The manipulation of the argument langSelectionOnly leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS
- Versión: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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: 7.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.04%
- Percentil entre todas las CVEs puntuadas: 63
- Fecha de la puntuación: 5/10/2026
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 movement75 % - Impacto principal
T1059Command and Scripting Interpreterexecution80 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation70 %
Acceso remoto en red adyacente (AV:N) requiriendo privilegios (PR:L) sin interacción del usuario contra router Linksys. Stack-based buffer overflow en /goform/langSwitchBack permite ejecución de código arbitrario y potencial escalada de privilegios (VC:H, VI:H, VA:H).
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 (6)
CWE
- CWE-119, CWE-121
Referencias
- https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md
- https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md#poc
- https://vuldb.com/?ctiid.319367
- https://vuldb.com/?id.319367
- https://vuldb.com/?submit.626698
- https://www.linksys.com/
- https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md
- https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md#poc
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-8833",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-8833",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-08-11T20:10:05.051112Z"
}
}
],
"cvssMetricV2": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"version": "2.0",
"baseScore": 9,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"authentication": "SINGLE",
"integrityImpact": "COMPLETE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/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": 2.8
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"Safety": "NOT_DEFINED",
"version": "4.0",
"Recovery": "NOT_DEFINED",
"baseScore": 7.4,
"Automatable": "NOT_DEFINED",
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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": "PROOF_OF_CONCEPT",
"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": "cna@vuldb.com",
"affectedData": [
{
"vendor": "Linksys",
"product": "RE6250",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
},
{
"vendor": "Linksys",
"product": "RE6300",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
},
{
"vendor": "Linksys",
"product": "RE6350",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
},
{
"vendor": "Linksys",
"product": "RE6500",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
},
{
"vendor": "Linksys",
"product": "RE7000",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
},
{
"vendor": "Linksys",
"product": "RE9000",
"versions": [
{
"status": "affected",
"version": "20250801"
}
]
}
]
}
],
"published": "2025-08-11T07:15:32.040",
"references": [
{
"url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "cna@vuldb.com"
},
{
"url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md#poc",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/?ctiid.319367",
"tags": [
"Permissions Required",
"VDB Entry"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/?id.319367",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/?submit.626698",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cna@vuldb.com"
},
{
"url": "https://www.linksys.com/",
"tags": [
"Product"
],
"source": "cna@vuldb.com"
},
{
"url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"url": "https://github.com/wudipjq/my_vuln/blob/main/Linksys/vuln_38/38.md#poc",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"description": [
{
"lang": "en",
"value": "CWE-119"
},
{
"lang": "en",
"value": "CWE-121"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was identified in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 up to 20250801. This issue affects the function langSwitchBack of the file /goform/langSwitchBack. The manipulation of the argument langSelectionOnly leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
},
{
"lang": "es",
"value": "Se identificó una vulnerabilidad en los Linksys RE6250, RE6300, RE6350, RE6500, RE7000 y RE9000 hasta la versión 20250801. Este problema afecta a la función langSwitchBack del archivo /goform/langSwitchBack. La manipulación del argumento langSelectionOnly provoca un desbordamiento del búfer en la pila. El ataque puede iniciarse en remoto. Se ha hecho público el exploit y puede que sea utilizado. Se contactó al proveedor con antelación para informarle sobre esta divulgación, pero no respondió."
}
],
"lastModified": "2026-06-17T10:07:44.717",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re6250_firmware:1.0.04.001:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "70728D67-153A-49FA-80E2-0DE9086DA253"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re6250:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "898FD49F-4225-47FF-822C-9E4FFB5EE192"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re6300_firmware:1.2.07.001:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1E3A6A93-D598-4F52-808C-EAA45B468066"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re6300:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "25647318-6422-418C-99B8-C806FF490028"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re6350_firmware:1.0.04.001:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0E0A8CCC-BD94-4865-9C0C-B60BD375CDC8"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re6350:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "4FFD3F65-E520-415D-BAB8-57FACEA5BEC7"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re7000_firmware:1.1.05.003:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8DC2325A-068F-4B5E-A365-6BF1103E320E"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re7000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D04E83B6-EE99-42EB-AA37-895B1467CEDA"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re9000_firmware:1.0.04.002:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "11F24125-412F-473A-BF34-02284F8DAC2D"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re9000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7424D2C2-BCF4-4B2D-BE59-71B50B13FE77"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:re6500_firmware:1.0.013.001:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "92354C9C-D1B2-4143-803D-DE5EF7842184"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:re6500:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "52622B22-2E42-443B-81DA-7C42ECCF0564"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cna@vuldb.com"
}