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8.7

Junos OS and Junos OS Evolved: An attacker causes a routing-daemon crash when BGP Prefix-SID routes are re-advertised

CVE-2026-33795 · published 21 days ago
Summary

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 version...

What to do
  • Update juniper networks junos os to version 23.2R2-S7.7 or later.
  • Update juniper networks junos os evolved to version 23.2R2-S7.7-EVO or later.
Affected software
VendorProductAffected versions
juniper networks junos os < 23.2R2-S7.7
juniper networks junos os evolved < 23.2R2-S7.7-EVO
Original advisory text
Junos OS and Junos OS Evolved: An attacker causes a routing-daemon crash when BGP Prefix-SID routes are re-advertised
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
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
8.7 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-197Numeric Truncation Error
Timeline
Published14 Oct 2026
Updated4 Nov 2026
First seen14 Oct 2026
Sources
CVE-2026-33795 · NVD
CVE-2026-33795 · MITRE
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