Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-21918

Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-415 Doble liberación
Fecha de publicación:
15/01/2026
Última modificación:
15/01/2026

Descripción

*** Pendiente de traducción *** A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On all SRX and MX Series platforms, when during TCP session establishment a specific sequence of packets is encountered a double free happens. This causes flowd to crash and the respective FPC to restart.<br /> <br /> <br /> <br /> <br /> <br /> This issue affects Junos OS on SRX and MX Series:<br /> <br /> <br /> <br /> * all versions before 22.4R3-S7,<br /> * 23.2 versions before 23.2R2-S3,<br /> * 23.4 versions before 23.4R2-S4,<br /> * 24.2 versions before 24.2R2.

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