CVE-2026-101948 Null dereference in Junos OS
A remote unauthenticated BGP peer can crash the routing daemon via a specific FlowSpec update when import policies are configured, causing 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-2026-101948?
CVE-2026-101948 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
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote unauthenticated BGP peer to cause a denial of service via a specific BGP FlowSpec update received by an affected BGP session.
Weakness: CWE-476
Which versions are affected by CVE-2026-101948?
How do I fix CVE-2026-101948?
No fix has been published for CVE-2026-101948 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-101948 being exploited?
There is no known exploitation of CVE-2026-101948 in the wild and no public exploit code.
Sources
Also known as GHSA-3whp-2r54-576x.