CVE-2026-27303
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- Puntuación base: 9.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.87%
- Percentil entre todas las CVEs puntuadas: 79
- 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
T1203Exploitation for Client Executionexecution95 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 %
CWE-502 (deserialization de datos no confiables) con UI:R requiere interacción del usuario visitando URL o página web maliciosa. El resultado es ejecución arbitraria de código en contexto del usuario.
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 (2)
CWE
- CWE-502
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-27303",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-27303",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-04-14T00:00:00+00:00"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@adobe.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9.6,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 2.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9.6,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "psirt@adobe.com",
"affectedData": [
{
"vendor": "Adobe",
"product": "Adobe Connect",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "12.10"
},
{
"status": "unaffected",
"version": "12.11",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Adobe",
"product": "Adobe Connect Desktop Application",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "2025.3"
},
{
"status": "unaffected",
"version": "2025.9",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-04-14T18:16:56.633",
"references": [
{
"url": "https://helpx.adobe.com/security/products/connect/apsb26-37.html",
"tags": [
"Vendor Advisory"
],
"source": "psirt@adobe.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@adobe.com",
"description": [
{
"lang": "en",
"value": "CWE-502"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed."
}
],
"lastModified": "2026-08-28T00:17:13.923",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*",
"vulnerable": true,
"matchCriteriaId": "4A1D88E9-612C-49B1-8521-F2258D4D74CA",
"versionEndExcluding": "12.11"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"
},
{
"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*",
"vulnerable": true,
"matchCriteriaId": "185BF6E9-82FC-45E0-A64E-03FB923F34AD",
"versionEndIncluding": "2025.3"
},
{
"criteria": "cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:*",
"vulnerable": true,
"matchCriteriaId": "783AAAA9-E68B-43E3-86A3-5227E27392A5",
"versionEndExcluding": "2025.9.15"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "psirt@adobe.com"
}