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High · 7.5 CVE-2026-102027 EUVD-2026-101352GHSA-57x6-37jg-h5f9

Junos OS and Junos OS Evolved: A configured BGP neighbor causes rpd crash when multipath next-hops are processed

Published Oct 14, 2026 · Updated Oct 16, 2026 · Assigned by juniper

Vendor: Juniper Networks Product: Junos OS Product: Junos OS Evolved Category: Network devices

Description

An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured eBGP neighbor to cause an rpd crash via BGP labeled-unicast UPDATEs when the affected multipath features are enabled.

Affected products

VendorProductAffectedFixed
Juniper Networks Junos OS 24.4 – < 24.4R2-S5, 25.2 – < 25.2R2-S2, 25.4 – < 25.4R1-S3, 26.2 – < 26.2R1-S2 24.4R2-S5
Juniper Networks Junos OS Evolved 24.4 – < 24.4R2-S5-EVO, 25.2 – < 25.2R2-S2-EVO, 25.4 – < 25.4R1-S3-EVO, 26.2 – < 26.2R1-S2-EVO, 25.2X100 – < 25.2X100-D35-EVO, 25.4X300 – < 25.4X300-D40-EVO 24.4R2-S5-EVO

References