CVE-2026-102068

Junos OS Evolved: Malformed TCP key-chain traffic causes a kernel panic when BGP or LDP key-chain authentication is used

State: Published
Severity: 9.2 Critical
Published: Oct 14, 2026
Updated: Oct 14, 2026
Reserved: Sep 28, 2026

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Description

A Stack-based Buffer Overflow vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated remote attacker to trigger a kernel panic via a crafted TCP packet when key-chain authentication is used for BGP or LDP.

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:H/SI:N/SA:L	juniper
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	juniper

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
Junos OS EvolvedJuniper Networks	before 23.2R2-S7.7-EVOAffected 23.4 to before 23.4R2-S8.11-EVOAffected 24.2 to before 24.2R2-S5.6-EVOAffected 24.4 to before 24.4R2-S5-EVOAffected 25.2 to before 25.2R2-S2-EVOAffected 25.4 to before 25.4R1-S3-EVOAffected 26.2 to before 26.2R1-S2-EVOAffected 23.4X100Affected 25.2X100 to before 25.2X100-D35-EVOAffected 25.4X300 to before 25.4X300-D40-EVOAffected

References

https://supportportal.juniper.net/JSA112250vendor-advisory

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