CVE-2026-33780
Gravedad CVSS v4.0:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
09/04/2026
Última modificación:
09/04/2026
Descripción
*** Pendiente de traducción *** A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS).<br />
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In an EVPN-MPLS scenario, routes learned from remote multi-homed Provider Edge (PE) devices are programmed as ESI routes. Due to a logic issue in the l2ald memory management, memory allocated for these routes is not released when there is churn for these routes. As a result, memory leaks in the l2ald process which will ultimately lead to a crash and restart of l2ald.<br />
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Use the following command to monitor the memory consumption by l2ald:<br />
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user@device> show system process extensive | match "PID|l2ald" <br />
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This issue affects:<br />
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Junos OS:<br />
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* all versions before 22.4R3-S5,<br />
* 23.2 versions before 23.2R2-S3,<br />
* 23.4 versions before 23.4R2-S4,<br />
* 24.2 versions before 24.2R2;<br />
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Junos OS Evolved:<br />
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* all versions before 22.4R3-S5-EVO,<br />
* 23.2 versions before 23.2R2-S3-EVO,<br />
* 23.4 versions before 23.4R2-S4-EVO,<br />
* 24.2 versions before 24.2R2-EVO.
Impacto
Puntuación base 4.0
7.10
Gravedad 4.0
ALTA
Puntuación base 3.x
6.50
Gravedad 3.x
MEDIA