CVE-2026-102026 Junos OS and Junos OS Evolved: An attacker causes a routing-daemon crash when BGP RIB sharding is used
An adjacent eBGP peer can crash the routing daemon in Juniper Junos OS when RIB sharding is enabled, causing a denial of service.
- 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-2026-102026?
CVE-2026-102026 is a high-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 Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent eBGP peer to cause a routing-daemon crash via a BGP route update when RIB sharding is enabled.
Weakness: CWE-664
Which versions are affected by CVE-2026-102026?
How do I fix CVE-2026-102026?
No fix has been published for CVE-2026-102026 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-2026-102026 being exploited?
There is no known exploitation of CVE-2026-102026 in the wild and no public exploit code.
Sources
Also known as GHSA-frf5-8p38-hm33.