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CVE-2026-21918

Опубликовано: 15 янв. 2026
Источник: nvd
CVSS3: 7.5
EPSS Низкий

Описание

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.

This issue affects Junos OS on SRX and MX Series:

  • all versions before 22.4R3-S7,
  • 23.2 versions before 23.2R2-S3,
  • 23.4 versions before 23.4R2-S4,
  • 24.2 versions before 24.2R2.

Уязвимые конфигурации

Конфигурация 1

Одновременно

Одно из

cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
Версия до 22.4 (исключая)
cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*

Одно из

cpe:2.3:h:juniper:mx10004:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx304:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*

EPSS

Процентиль: 15%
0.00048
Низкий

7.5 High

CVSS3

Дефекты

CWE-415

Связанные уязвимости

CVSS3: 7.5
github
22 дня назад

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. This issue affects Junos OS on SRX and MX Series: * all versions before 22.4R3-S7, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2.

CVSS3: 8.6
fstec
24 дня назад

Уязвимость демона обработки потоков flowd операционных систем Juniper Networks Junos OS для межсетевых экранов серии SRX и маршрутизаторов серии MX, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 15%
0.00048
Низкий

7.5 High

CVSS3

Дефекты

CWE-415