Buffer overflow in Juniper Networks Junos OS
CVE-2026-102015
A Heap-based Buffer Overflow vulnerability in the secure-dot1xd process of Juniper Networks on Junos OS and Junos OS Evolved allows an unauthenticated adjacent network attacker to execute code as root or cause a denial of service via an EAPOL frame sent to an 802.1X-authenticated interface.
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
- Juniper Networks Junos OS
- Juniper Networks Junos OS Evolved — versions 23.4X100
Weakness classification (CWE)
References
- supportportal.juniper.net/JSA112187 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-102015?
- CVE-2026-102015 is a high-severity vulnerability in Juniper Networks Junos OS, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-10-14.
- How severe is CVE-2026-102015?
- High severity. CVSS v3 base score is 8.8 out of 10.