CVE-2026-102069 Junos OS: An ICCP peer causes dot1xd to crash when dot1x synchronization is enabled
An adjacent attacker can crash the dot1x daemon or execute code as root on Junos Fusion Aggregation Devices when dot1x synchronization is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102069?
CVE-2026-102069 is a high-severity memory corruption vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A Stack-based Buffer Overflow vulnerability in the dot1x daemon of Juniper Networks Junos OS devices operating as Junos Fusion Aggregation Devices allows an adjacent attacker acting as the configured ICCP peer to cause a denial of service and potentially execute code as root via. The issue is triggered when dot1x synchronization is enabled for the required Fusion satellite topology.
Weakness: CWE-121
Which versions are affected by CVE-2026-102069?
How do I fix CVE-2026-102069?
No fix has been published for CVE-2026-102069 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-102069 being exploited?
There is no known exploitation of CVE-2026-102069 in the wild and no public exploit code.
Sources
Also known as GHSA-g884-53ph-r9cm.