CRITICAL

CVE-2026-102178

CVSS v3

9.8

CRITICAL

EPSS Score

0.5 %

exploit probability, as of 2026-10-16

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-102178 yet.

Full record on NVD

Description

A Stack-based Buffer Overflow vulnerability in the BGP routing daemon of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP flowspec peer to cause routing-engine compromise or a routing-daemon denial of service via flowspec route re-advertisement when BGP update-threading is enabled.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-10-14
Last Modified: 2026-10-15

Frequently asked questions

What is CVE-2026-102178?

Is CVE-2026-102178 actively exploited?

Active exploitation of CVE-2026-102178 has not been confirmed. Its EPSS score was 0.5% on 2026-10-16, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-102178?

CVE-2026-102178 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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