7.1

CVE-2025-52947

An Improper Handling of Exceptional Conditions vulnerability in route processing of Juniper Networks Junos OS on specific end-of-life (EOL) ACX Series platforms allows an attacker to crash the Forwarding Engine Board (FEB) by flapping an interface, leading to a Denial of Service (DoS).

On ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096 devices, FEB0 will crash when the primary path port of the L2 circuit IGP (Interior Gateway Protocol) on the local device goes down. This issue is seen only when 'hot-standby' mode is configured for the L2 circuit.

This issue affects Junos OS on ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096: 



  *  all versions before 21.2R3-S9.
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JuniperJunos Version < 21.2
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Update-
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater1
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater1-s1
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater1-s2
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater2
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater2-s1
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater2-s2
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s1
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s2
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s3
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s4
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s5
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s6
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s7
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
JuniperJunos Version21.2 Updater3-s8
   JuniperAcx1000 Version-
   JuniperAcx1100 Version-
   JuniperAcx2000 Version-
   JuniperAcx2100 Version-
   JuniperAcx2200 Version-
   JuniperAcx4000 Version-
   JuniperAcx5048 Version-
   JuniperAcx5096 Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.104
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
sirt@juniper.net 7.1 0 0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:Green
sirt@juniper.net 6.5 2.8 3.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.