CVE-2021-25267
Estado: ModificadaAlta (8.4)—
Multiple XSS vulnerabilities in Webadmin allow for privilege escalation from admin to super-admin in Sophos Firewall older than version 19.0 GA.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
- Puntuación base: 8.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.09%
- Percentil entre todas las CVEs puntuadas: 64
- 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-79
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-25267",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 8.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:S/C:C/I:C/A:C",
"authentication": "SINGLE",
"integrityImpact": "COMPLETE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 6.8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security-alert@sophos.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.8,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 0.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8.4,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 1.7
}
]
},
"affected": [
{
"source": "security-alert@sophos.com",
"affectedData": [
{
"vendor": "Sophos",
"product": "Sophos Firewall",
"versions": [
{
"status": "affected",
"version": "unspecified",
"lessThan": "19.0 GA",
"versionType": "custom"
}
]
}
]
}
],
"published": "2022-05-05T18:15:09.367",
"references": [
{
"url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220505-sfos-19-0-0",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "security-alert@sophos.com"
},
{
"url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220505-sfos-19-0-0",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple XSS vulnerabilities in Webadmin allow for privilege escalation from admin to super-admin in Sophos Firewall older than version 19.0 GA."
},
{
"lang": "es",
"value": "Múltiples vulnerabilidades de tipo XSS en Webadmin permiten una escalada de privilegios de admin a super-admin en Sophos Firewall versiones anteriores a 19.0 GA"
}
],
"lastModified": "2026-06-17T03:41:44.403",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:sophos:firewall_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6EE8FAED-A79E-470F-B3DE-51F326E80353",
"versionEndExcluding": "19.0"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:sophos:firewall:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "2F728103-324C-4F34-9EE6-6E922018A2EB"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "security-alert@sophos.com"
}