CVE-2026-102058 Junos OS and Junos OS Evolved: An attacker causes a bfdd denial of service when BFD is enabled
An unauthenticated adjacent attacker can cause a denial of service in the bfdd daemon by sending crafted BFD traffic when BFD 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-2026-102058?
CVE-2026-102058 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 Reachable Assertion vulnerability in the bfdd daemon of Juniper Networks Junos OS and Junos OS Evolved platforms allows an unauthenticated adjacent attacker to cause a denial of service by restarting the daemon via crafted BFD session traffic.
Weakness: CWE-617
Which versions are affected by CVE-2026-102058?
How do I fix CVE-2026-102058?
No fix has been published for CVE-2026-102058 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-2026-102058 being exploited?
There is no known exploitation of CVE-2026-102058 in the wild and no public exploit code.
Sources
Also known as GHSA-x6cq-pwfh-62wx.