CVE-2026-102045 Junos OS Evolved: An crafted LACP frame causes lacpd to crash when LACP is enabled
A crafted LACP frame causes a denial of service in Junos OS Evolved when LACP is enabled on aggregated Ethernet ports.
- 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-2026-102045?
CVE-2026-102045 is a high-severity memory corruption vulnerability in Juniper Networks Junos OS Evolved, 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
An Out-of-bounds Write Out-of-bounds Write vulnerability in lacpd of Juniper Networks Junos OS Evolved allows a Layer-2-adjacent attacker to cause a denial of service via a crafted frame received on an LACP-enabled aggregated-Ethernet member port.
Weakness: CWE-787
Which versions are affected by CVE-2026-102045?
How do I fix CVE-2026-102045?
No fix has been published for CVE-2026-102045 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-2026-102045 being exploited?
There is no known exploitation of CVE-2026-102045 in the wild and no public exploit code.
Sources
Also known as GHSA-q5wg-vxc8-v2rp.