CVE-2026-21921

Опубликовано: 15 янв. 2026

Источник: nvd

CVSS3: 6.5

EPSS Низкий

Описание

When telemetry collectors are frequently subscribing and unsubscribing to sensors continuously over a long period of time, telemetry-capable processes like chassisd, rpd or mib2d will crash and restart, which - depending on the process - can cause a complete outage until the system has recovered.

This issue affects:

Junos OS:

all versions before 22.4R3-S8,
23.2 versions before 23.2R2-S5,
23.4 versions before 23.4R2;

Junos OS Evolved:

all versions before 22.4R3-S8-EVO,
23.2 versions before 23.2R2-S5-EVO,
23.4 versions before 23.4R2-EVO.

Ссылки

https://kb.juniper.net/JSA106021
Vendor Advisory
https://supportportal.juniper.net/JSA106021
Vendor Advisory

Уязвимые конфигурации

Конфигурация 1

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:22.4:r3-s7:*:*:*:*:*:*

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:23.2:r2-s3:*:*:*:*:*:*

cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*

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_os_evolved:*:*:*:*:*:*:*:*

Версия до 22.4 (исключая)

cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s3:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s4:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s5:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s6:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s7:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:-:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s2:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s3:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s4:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.4:-:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.4:r1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.4:r1-s1:*:*:*:*:*:*

cpe:2.3:o:juniper:junos_os_evolved:23.4:r1-s2:*:*:*:*:*:*

EPSS

Процентиль: 12%

0.00041

Низкий

6.5 Medium

CVSS3

Дефекты

CWE-416

Связанные уязвимости

GHSA-fm5x-5pxq-6229

CVSS3: 6.5

github

23 дня назад

A Use After Free vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service (DoS). When telemetry collectors are frequently subscribing and unsubscribing to sensors continuously over a long period of time, telemetry-capable processes like chassisd, rpd or mib2d will crash and restart, which - depending on the process - can cause a complete outage until the system has recovered. This issue affects: Junos OS: * all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S5, * 23.4 versions before 23.4R2; Junos OS Evolved: * all versions before 22.4R3-S8-EVO, * 23.2 versions before 23.2R2-S5-EVO, * 23.4 versions before 23.4R2-EVO.

EPSS

Процентиль: 12%

0.00041

Низкий

6.5 Medium

CVSS3

Дефекты

CWE-416