CVE-2026-102027CWE-131

CVE-2026-102027

High · published October 14, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
EPSS
0.00460 · 39.0th percentile
Weakness
CWE-131 · Incorrect Calculation of Buffer Size
Published
2026-10-14T21:17Z
References (1)
https://supportportal.juniper.net/JSA112187 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 16:48Z
    Junos OS and Junos OS Evolved: A configured BGP neighbor causes rpd crash when multipath next-hops are processed
    cvelistv5
  • 14 OCT 16:48Z
    Junos OS and Junos OS Evolved: A configured BGP neighbor causes rpd crash when multipath next-hops are processed
    cvelistv5