CVE-2026-102015 Juniper Networks Junos OS - Remote Code Execution & Denial of Service

Juniper Networks Junos OS and Junos OS Evolved contain a heap-based buffer overflow caused by improper handling of EAPOL frames in the secure-dot1xd process, letting unauthenticated adjacent network attackers execute code as root or cause denial of service, exploit requires network adjacency.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to the latest Junos OS and Junos OS Evolved versions with the security fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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