CVE-2026-102032 Denial of service in Junos OS
An unauthenticated adjacent attacker can cause a denial of service via crafted packets when the static MAC-IP feature 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-2026-102032?
CVE-2026-102032 is a high-severity denial of service 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 Missing Release of Memory after Effective Lifetime vulnerability in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service via crafted packets when the static MAC-IP feature is in use.
Weakness: CWE-401
Which versions are affected by CVE-2026-102032?
How do I fix CVE-2026-102032?
No fix has been published for CVE-2026-102032 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-102032 being exploited?
There is no known exploitation of CVE-2026-102032 in the wild and no public exploit code.
Sources
Also known as GHSA-rg4j-2h5v-2wg7.