CVE-2026-102053 Denial of service in Junos OS
A remote attacker can cause denial of service via memory exhaustion in Juniper QFX platforms using EVPN-VXLAN active-active multihoming.
- 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-2026-102053?
CVE-2026-102053 is a medium-severity denial of service 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 Improper Release of Memory Before Removing Last Reference vulnerability in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved on QFX5K-family platforms allows a configured EVPN peer to cause a denial of service through memory exhaustion via EVPN-VXLAN active-active multihoming route processing.
Weakness: CWE-401
Which versions are affected by CVE-2026-102053?
How do I fix CVE-2026-102053?
No fix has been published for CVE-2026-102053 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-2026-102053 being exploited?
There is no known exploitation of CVE-2026-102053 in the wild and no public exploit code.
Sources
Also known as GHSA-43rf-v6pj-8jq2.