CVE-2025-4948
Estado: AplazadaAlta (7.5)—
A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.78%
- Percentil entre todas las CVEs puntuadas: 54
- 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
T1190Exploit Public-Facing Applicationinitial access95 % - Impacto principal
T1499.004Application or System Exploitationimpact90 %
Vector CVSS AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-191 (integer underflow) en procesamiento de mensajes HTTP causa crash → DoS de aplicación (T1499.004).
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 (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-191
Referencias
- https://access.redhat.com/errata/RHSA-2025:21657
- https://access.redhat.com/errata/RHSA-2025:8126
- https://access.redhat.com/errata/RHSA-2025:8128
- https://access.redhat.com/errata/RHSA-2025:8132
- https://access.redhat.com/errata/RHSA-2025:8139
- https://access.redhat.com/errata/RHSA-2025:8140
- https://access.redhat.com/errata/RHSA-2025:8252
- https://access.redhat.com/errata/RHSA-2025:8480
- https://access.redhat.com/errata/RHSA-2025:8481
- https://access.redhat.com/errata/RHSA-2025:8482
- https://access.redhat.com/errata/RHSA-2025:8663
- https://access.redhat.com/errata/RHSA-2025:9179
- https://access.redhat.com/security/cve/CVE-2025-4948
- https://bugzilla.redhat.com/show_bug.cgi?id=2367183
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/449
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/449
JSON original (NVD)
Mostrar
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"vulnStatus": "Deferred",
"weaknesses": [
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"source": "secalert@redhat.com",
"description": [
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}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk."
},
{
"lang": "es",
"value": "Se encontró una falla en la función soup_multipart_new_from_message() de la librería HTTP libsoup, comúnmente utilizada por GNOME y otras aplicaciones para gestionar las comunicaciones web. El problema ocurre cuando la librería procesa mensajes multiparte especialmente manipulados. Debido a una validación incorrecta, un cálculo interno puede fallar, provocando un desbordamiento de enteros. Esto puede provocar que el programa acceda a memoria no válida y se bloquee. Como resultado, cualquier aplicación o servidor que utilice libsoup podría verse obligado a cerrarse inesperadamente, creando un riesgo de denegación de servicio (DoS)."
}
],
"lastModified": "2026-06-30T15:16:51.117",
"sourceIdentifier": "secalert@redhat.com"
}