Buffer overflow in Juniper Networks Junos OS

CVE-2026-102050

A Stack-based Buffer Overflow vulnerability in the l2cpd daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service in Layer 2 control-plane processing via LLDP packets received on an interface configured for LLDP. Repeated triggering may disrupt LLDP and other Layer 2 control protocols across the device.

Vulnerability class: Buffer Overflow

Published .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-102050?
CVE-2026-102050 is a high-severity vulnerability in Juniper Networks Junos OS, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-10-14.
How severe is CVE-2026-102050?
High severity. CVSS v3 base score is 8.8 out of 10.