CVE-2021-3554
Estado: ModificadaCrítica (10)—
Improper Access Control vulnerability in the patchesUpdate API as implemented in Bitdefender Endpoint Security Tools for Linux as a relay role allows an attacker to manipulate the remote address used for pulling patches. This issue affects: Bitdefender Endpoint Security Tools for Linux versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 10
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 2.12%
- Percentil entre todas las CVEs puntuadas: 81
- 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 (2)
CWE
- CWE-284
- NVD-CWE-Other
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-3554",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve-requests@bitdefender.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 2.2
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 10,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve-requests@bitdefender.com",
"affectedData": [
{
"vendor": "Bitdefender",
"product": "Endpoint Security Tools for Linux",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "6.6.27.390",
"versionType": "custom"
},
{
"status": "affected",
"version": "unspecified",
"lessThan": "7.1.2.33",
"versionType": "custom"
}
]
},
{
"vendor": "Bitdefender",
"product": "Unified Endpoint",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "6.2.21.160",
"versionType": "custom"
}
]
},
{
"vendor": "Bitdefender",
"product": "GravityZone",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "6.24.1-1",
"versionType": "custom"
}
]
}
]
}
],
"published": "2021-11-24T16:15:13.797",
"references": [
{
"url": "https://www.bitdefender.com/support/security-advisories/improper-access-control-vulnerability-patchesupdate-api-va-9825",
"tags": [
"Broken Link"
],
"source": "cve-requests@bitdefender.com"
},
{
"url": "https://www.bitdefender.com/support/security-advisories/improper-access-control-vulnerability-patchesupdate-api-va-9825",
"tags": [
"Broken Link"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "cve-requests@bitdefender.com",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Improper Access Control vulnerability in the patchesUpdate API as implemented in Bitdefender Endpoint Security Tools for Linux as a relay role allows an attacker to manipulate the remote address used for pulling patches. This issue affects: Bitdefender Endpoint Security Tools for Linux versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1."
},
{
"lang": "es",
"value": "Una vulnerabilidad de control de acceso inadecuado en la API patchesUpdate, tal y como se implementa en Bitdefender Endpoint Security Tools for Linux como rol de retransmisión, permite a un atacante manipular la dirección remota usada para extraer parches. Este problema afecta a: Las versiones de Bitdefender Endpoint Security Tools for Linux anteriores a 6.6.27.390; las versiones anteriores a la 7.1.2.33. Las versiones de Bitdefender Unified Endpoint anteriores a 6.2.21.160. Versiones de Bitdefender GravityZone anteriores a 6.24.1-1"
}
],
"lastModified": "2026-06-17T04:05:20.310",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5BF95C9E-3696-4495-B347-068F6888DDE8",
"versionEndExcluding": "6.6.27.390"
},
{
"criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:linux:*:*",
"vulnerable": true,
"matchCriteriaId": "2EB311C9-8B4E-4D11-8FFF-E4E14DAE686E",
"versionEndExcluding": "6.6.27.390"
},
{
"criteria": "cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B1087345-C896-4934-A019-552B2B9F303F",
"versionEndExcluding": "7.1.2.33",
"versionStartIncluding": "7.0.0.00"
},
{
"criteria": "cpe:2.3:a:bitdefender:gravityzone:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "01F7A9DD-2F78-47D2-B9FD-83D12C755798",
"versionEndExcluding": "6.24.1-1"
},
{
"criteria": "cpe:2.3:a:bitdefender:gravityzone:6.24.1-1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7D891393-9AC4-434F-B1D1-2D1B2FA7C0C9"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve-requests@bitdefender.com"
}