CVE-2026-33795 Juniper Networks Junos OS & Junos OS Evolved - Denial of Service

Juniper Networks Junos OS and Junos OS Evolved >= 20.4R1 contain a denial of service caused by a numeric truncation error in the rpd process triggered by BGP Prefix-SID route advertisement, letting unauthenticated network attackers cause service disruption, exploit requires network access to send BGP advertisements.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-197

Vendor fix

Update to the latest version beyond 20.4R1 for Junos OS and Junos OS Evolved.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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