CVE-2026-102019 Junos OS and Junos OS Evolved: Malformed RIPv2 messages cause routing service disruption when RIP is enabled
An unauthenticated adjacent attacker can cause routing service disruption by sending malformed RIPv2 messages when RIP 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-2026-102019?
CVE-2026-102019 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
An Improper Validation of Specified Quantity in Input vulnerability in the rpd process of Juniper Networks Junos OS and Junos Evolved allows an unauthenticated adjacent attacker to cause a denial-of-service condition via a malformed RIPv2 message.
Weakness: CWE-1284
Which versions are affected by CVE-2026-102019?
How do I fix CVE-2026-102019?
No fix has been published for CVE-2026-102019 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-2026-102019 being exploited?
There is no known exploitation of CVE-2026-102019 in the wild and no public exploit code.
Sources
Also known as GHSA-xppx-22rc-wjv5.