CVE-2026-102036 Junos OS and Junos OS Evolved: An EVPN default-gateway route burst causes l2ald denial of service
A remote attacker can cause a denial of service in the l2ald process by sending crafted EVPN routes, affecting Juniper network devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102036?
CVE-2026-102036 is a high-severity vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Integer Overflow or Wraparound vulnerability in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved allows a configured EVPN BGP peer to cause a denial of service via EVPN Type-2 MAC/IP routes.
Weakness: CWE-190
Which versions are affected by CVE-2026-102036?
How do I fix CVE-2026-102036?
No fix has been published for CVE-2026-102036 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102036 being exploited?
There is no known exploitation of CVE-2026-102036 in the wild and no public exploit code.
Sources
Also known as GHSA-5f45-xmp9-v5g9.