CVE-2026-101952 Junos OS and Junos OS Evolved: A specific BGP ISO-VPN update causes an rpd crash when BMP or NSR is enabled
A malicious BGP peer can crash the routing daemon in Junos OS if BMP or NSR features are 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-2026-101952?
CVE-2026-101952 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 Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP ISO-VPN peer to cause an rpd crash by sending a specific ISO-VPN update which is then processed by BMP route monitoring or NSR.
Weakness: CWE-1284
Which versions are affected by CVE-2026-101952?
How do I fix CVE-2026-101952?
No fix has been published for CVE-2026-101952 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-2026-101952 being exploited?
There is no known exploitation of CVE-2026-101952 in the wild and no public exploit code.
Sources
Also known as GHSA-mjrv-f2hg-pqg8.