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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-33797

Junos OS and Junos OS Evolved: An attacker sending a specific genuine BGP packet causes a BGP reset

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Status
Published
Published
Updated
Assigning organization
juniper

Description

An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS). An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS: * 25.2 versions before 25.2R2 This issue does not affect Junos OS versions before 25.2R1. This issue affects Junos OS Evolved: * 25.2-EVO versions before 25.2R2-EVO This issue does not affect Junos OS Evolved versions before 25.2R1-EVO. eBGP and iBGP are affected. IPv4 and IPv6 are affected.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS

Default version status: unaffected

  • 25.2 to < 25.2R2affected
  • 0 to < 25.2R1unaffected

Juniper Networks Junos OS Evolved

Default version status: unaffected

  • 25.2 to < 25.2R2-EVOaffected
  • 0 to < 25.2R1-EVOunaffected

References