CVE-2026-57030MEDIUM· 5.9MITRENVD대응게시일: 2026. 07. 09.수정일: 2026. 07. 13.CNA: sirt@juniper.netAnalyzed

A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in the packet forwarding engine

위협 신호 · CVSS · EPSS · KEV

정기 패치· 높은 악용 신호 없음

CVSS

5.9medium

이론적 심각도 점수

EPSS

0.3%상위 80.4%

30일 내 악용 확률 예측

KEV

미등재

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권장 대응 기한60일 이내CISA SSVC 기준

계획된 패치 주기 내 조치(60일 이내)

외부 노출· KEV 미등재 · 자동화 어려움 · 부분 영향 · 외부 노출

CVSS 벡터 · 메트릭

악용 경로

공격 벡터네트워크

공격 복잡도높음

필요 권한불필요

사용자 상호작용불필요

범위불변

영향

기밀성 영향없음

무결성 영향없음

가용성 영향높음

버전별 점수

CVSS 4.08.2HIGH· 악용성숙도 NOT_DEFINED

CVSS 3.15.9MEDIUM· 악용성 2.2· 영향도 3.6

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

약점 (CWE)

CWE-362
경쟁 조건(Race Condition) — 동시 실행 타이밍 결함으로 상태가 깨짐.

상세 설명

A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') 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).

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:

user@host> show security flow session | match timeout
Session ID: 98784248524, Policy name: PROD-FLOW/4, HA State: Active, Timeout: 85250, Session State: Valid

This will lead to an accumulation of flows which can be observed by an ever-increasing value of invalidated sessions in the output of 'show security flow session summary':

user@host> show security flow session summary | match invalid
Invalidated sessions: 216931These sessions can't be cleared manually with the 'clear security flow session' 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.

This issue affects Junos OS on SRX Series:

24.2 versions before 24.2R2-S3,
24.4 versions before 24.4R2-S1, 24.4R2-S2,
25.2 versions before 25.2R1-S2, 25.2R2.

This issue does not affect releases earlier than 24.2R1;

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영향받는 제품·버전

juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper junos
other
juniper srx1500
other
juniper srx1600
other
juniper srx2300
other
juniper srx300
other
juniper srx320
other
juniper srx340
other
juniper srx345
other
juniper srx380
other
juniper srx400
other
juniper srx4100
other
juniper srx4120
other
juniper srx4200
other
juniper srx4300
other
juniper srx440
other
juniper srx4600
other
juniper srx4700
other
juniper srx5400
other
juniper srx5600
other
juniper srx5800
other

영향받는 구성 (CPE) 34

juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:*
juniper junos 24.2cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*
juniper junos 24.4cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*
juniper junos 24.4cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*
juniper junos 24.4cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*
juniper junos 24.4cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:*
juniper junos 24.4cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*
juniper junos 25.2cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:*
juniper junos 25.2cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:*
juniper junos 25.2cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:*
juniper srx1500cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:*
juniper srx1600cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:*
juniper srx2300cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:*
juniper srx300cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:*
juniper srx320cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:*
juniper srx340cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:*
juniper srx345cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:*
juniper srx380cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:*
juniper srx400cpe:2.3:h:juniper:srx400:-:*:*:*:*:*:*:*
juniper srx4100cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*
juniper srx4120cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:*
juniper srx4200cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*
juniper srx4300cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*
juniper srx440cpe:2.3:h:juniper:srx440:-:*:*:*:*:*:*:*
juniper srx4600cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*
juniper srx4700cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*
juniper srx5400cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*
juniper srx5600cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
juniper srx5800cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*

참고 자료 1

https://supportportal.juniper.net/JSA110090
Vendor Advisory

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