An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial-Of-Service (DoS). When an affected system receives a specific BGP EVPN update message over an established BGP session, this causes an rpd crash and restart. A BGP EVPN configuration is not necessary to be vulnerable. If peers are not configured to send BGP EVPN updates to a vulnerable device, then this issue can't occur. This issue affects iBGP and eBGP, over IPv4 and IPv6. This issue affects: Junos OS: * 23.4 versions from 23.4R2-S3 before 23.4R2-S5, * 24.2 versions from 24.2R2 before 24.2R2-S1, * 24.4 versions before 24.4R1-S3, 24.4R2; Junos OS Evolved: * 23.4-EVO versions from 23.4R2-S2-EVO before 23.4R2-S5-EVO, * 24.2-EVO versions from 24.2R2-EVO before 24.2R2-S1-EVO, * 24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://supportportal.juniper.net/JSA103165 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.7 · juniperNVD modified 2026-10-18 21:10
Affected (CPE criteria) 15
cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:24.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:24.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:24.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:24.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:24.4:r2:*:*:*:*:*:*
References 1
- https://supportportal.juniper.net/JSA103165 Vendor Advisory