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CVE-2026-21218

Estado: AnalizadaAlta (7.5)—

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

CVSS

Probabilidad de explotación (EPSS)

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.

AV:N/PR:N acceso remoto sin privilegios (T1190). CWE-166 y 'spoofing' sugieren suplantación de identidad/cuenta (T1098). Sin validación de elemento especial permite impersonación de 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

Privileged Account ManagementNetwork SegmentationVulnerability ScanningUser Account ManagementRestrict File and Directory PermissionsOperating System Configuration

Tecnologías afectadas (1)

Microsoft — .net

CWE

Referencias

JSON original (NVD)

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