CVE-2022-43973
Estado: ModificadaAlta (7.2)—
An arbitrary code execution vulnerability exisits in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. The Check_TSSI function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious POST request to /apply.cgi to execute arbitrary commands on the underlying Linux operating system as root.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.2
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.85%
- Percentil entre todas las CVEs puntuadas: 78
- 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).
Tecnologías afectadas (1)
CWE
- CWE-78
- CWE-78
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-43973",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-43973",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-04-09T14:19:02.848808Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "trellixpsirt@trellix.com",
"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
},
{
"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
}
]
},
"affected": [
{
"source": "trellixpsirt@trellix.com",
"affectedData": [
{
"vendor": "Linksys",
"product": "WRT54GL Wireless-G Broadband Router",
"versions": [
{
"status": "affected",
"version": "Firmware",
"versionType": "custom",
"lessThanOrEqual": "4.30.18.006"
}
]
}
]
}
],
"published": "2023-01-09T21:15:10.997",
"references": [
{
"url": "https://youtu.be/73-1lhvJPNg",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "trellixpsirt@trellix.com"
},
{
"url": "https://youtu.be/RfWVYCUBNZ0",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "trellixpsirt@trellix.com"
},
{
"url": "https://youtu.be/TeWAmZaKQ_w",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "trellixpsirt@trellix.com"
},
{
"url": "https://youtu.be/73-1lhvJPNg",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://youtu.be/RfWVYCUBNZ0",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://youtu.be/TeWAmZaKQ_w",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "trellixpsirt@trellix.com",
"description": [
{
"lang": "en",
"value": "CWE-78"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-78"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An arbitrary code execution vulnerability exisits in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. The Check_TSSI function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious POST request to /apply.cgi to execute arbitrary commands on the underlying Linux operating system as root."
},
{
"lang": "es",
"value": "Existe una vulnerabilidad de ejecución de código arbitrario en el router Linksys WRT54GL Wireless-G Broadband con firmware <= 4.30.18.006. La función Check_TSSI dentro del binario httpd utiliza entradas de usuario no validadas en la construcción de un comando del sistema. Un atacante autenticado con privilegios de administrador puede aprovechar esta vulnerabilidad en la red mediante una solicitud POST maliciosa a /apply.cgi para ejecutar comandos arbitrarios en el sistema operativo Linux subyacente como root."
}
],
"lastModified": "2026-06-17T05:07:34.370",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linksys:wrt54gl_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC08DC7C-7FBB-4CD6-89F1-7F4997BC9CAE",
"versionEndIncluding": "4.30.18.006"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:linksys:wrt54gl:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "04AA9149-2F72-4585-8A41-66AE3D573197"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "trellixpsirt@trellix.com"
}