CVE-2026-33795 Junos OS and Junos OS Evolved: An attacker causes a routing-daemon crash when BGP Prefix-SID routes are re-advertised
An unauthenticated attacker can crash the routing daemon by re-advertising BGP Prefix-SID routes, causing a denial of service on Juniper devices.
- 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-2026-33795?
CVE-2026-33795 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 Numeric Truncation Error vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a denial of service via a BGP Prefix-SID route advertisement that is subsequently re-advertised.
This issue does not affect versions of Junos OS prior to 20.4R1. This issue does not affect versions of Junos OS Evolved prior to 20.4R1-EVO
Weakness: CWE-197
Which versions are affected by CVE-2026-33795?
How do I fix CVE-2026-33795?
No fix has been published for CVE-2026-33795 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-33795 being exploited?
There is no known exploitation of CVE-2026-33795 in the wild and no public exploit code.
Sources
Also known as GHSA-5ggv-3g39-x5c7.