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CVE-2025-49812

Estado: ModificadaAlta (7.4)—

In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.

Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.

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.

Ataque MITM (man-in-the-middle) explícito en desincronización HTTP/TLS. CWE-287 (autenticación débil). Vector AV:N sin privilegios previos. Resultado: secuestro de sesión autenticada e inyección de datos.

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

User TrainingEncrypt Sensitive InformationApplication Developer GuidanceActive Directory ConfigurationUser Account ManagementRestrict File and Directory Permissions

Tecnologías afectadas (1)

Apache — Http Server

CWE

Referencias

JSON original (NVD)

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