CVE-2026-21912
Gravedad CVSS v4.0:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
15/01/2026
Última modificación:
15/01/2026
Descripción
*** Pendiente de traducción *** A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the method to collect FPC Ethernet firmware statistics of Juniper Networks Junos OS on MX10k Series allows a local, low-privileged attacker executing the &#39;show system firmware&#39; CLI command to cause an LC480 or LC2101 line card to reset.<br />
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On MX10k Series systems with LC480 or LC2101 line cards, repeated execution of the &#39;show system firmware&#39; CLI command can cause the line card to crash and restart. Additionally, some time after the line card crashes, chassisd may also crash and restart, generating a core dump.This issue affects Junos OS on MX10k Series: <br />
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* all versions before 21.2R3-S10, <br />
* from 21.4 before 21.4R3-S9, <br />
* from 22.2 before 22.2R3-S7, <br />
* from 22.4 before 22.4R3-S6, <br />
* from 23.2 before 23.2R2-S2, <br />
* from 23.4 before 23.4R2-S3, <br />
* from 24.2 before 24.2R2.
Impacto
Puntuación base 4.0
6.80
Gravedad 4.0
MEDIA
Puntuación base 3.x
5.50
Gravedad 3.x
MEDIA