CVE-2026-57030
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-362
Ejecución concurrente utilizando recursos compartidos con una incorrecta sincronización (Condición de carrera)
Fecha de publicación:
09/07/2026
Última modificación:
09/07/2026
Descripción
*** Pendiente de traducción *** A Concurrent Execution using Shared Resource with Improper Synchronization (&#39;Race Condition&#39;) vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<br />
<br />
As part of the stateful traffic processing on SRX Series devices flows are being established, and removed when not needed anymore. During the removal process the timeout of a flow should be set to 3 seconds and consequentially the flow should be removed shortly after. Due to a race condition occurring when setting the timeout there is a chance (the exact conditions are outside the attackers control) that the timeout is instead set to a very high value of larger than 10,000 seconds:<br />
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user@host> show security flow session | match timeout<br />
Session ID: 98784248524, Policy name: PROD-FLOW/4, HA State: Active, Timeout: 85250, Session State: Valid<br />
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This will lead to an accumulation of flows which can be observed by an ever-increasing value of invalidated sessions in the output of &#39;show security flow session summary&#39;:<br />
<br />
user@host> show security flow session summary | match invalid<br />
Invalidated sessions: 216931These sessions can&#39;t be cleared manually with the &#39;clear security flow session&#39; command, which will either lead to forwarding to stop (and the system needs to be manually recovered with a reboot) or to a flowd core and automatic reboot.<br />
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<br />
This issue affects Junos OS on SRX Series:<br />
<br />
<br />
* 24.2 versions before 24.2R2-S3,<br />
* 24.4 versions before 24.4R2-S1, 24.4R2-S2,<br />
* 25.2 versions before 25.2R1-S2, 25.2R2.<br />
<br />
<br />
<br />
<br />
This issue does not affect releases earlier than 24.2R1;
Impacto
Puntuación base 4.0
8.20
Gravedad 4.0
ALTA
Puntuación base 3.x
5.90
Gravedad 3.x
MEDIA