CVE-2025-52953

Summary

An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). 

Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability.

This issue affects Junos OS:

  • All versions before 21.2R3-S9,
  • from 21.4 before 21.4R3-S11,
  • from 22.2 before 22.2R3-S7,
  • from 22.4 before 22.4R3-S7,
  • from 23.2 before 23.2R2-S4,
  • from 23.4 before 23.4R2-S4,
  • from 24.2 before 24.2R2,
  • from 24.4 before 24.4R1-S3, 24.4R2

Junos OS Evolved:

  • All versions before 22.2R3-S7-EVO,
  • from 22.4-EVO before 22.4R3-S7-EVO,
  • from 23.2-EVO before 23.2R2-S4-EVO,
  • from 23.4-EVO before 23.4R2-S4-EVO,
  • from 24.2-EVO before 24.2R2-EVO,
  • from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 21.2R3-S9affected
Juniper NetworksJunos OS21.4 < 21.4R3-S11affected
Juniper NetworksJunos OS22.2 < 22.2R3-S7affected
Juniper NetworksJunos OS22.4 < 22.4R3-S7affected
Juniper NetworksJunos OS23.2 < 23.2R2-S4affected
Juniper NetworksJunos OS23.4 < 23.4R2-S4affected
Juniper NetworksJunos OS24.2 < 24.2R2affected
Juniper NetworksJunos OS24.4 < 24.4R1-S3, 24.4R2affected
Juniper NetworksJunos OS Evolved0 < 22.2R3-S7-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-S7-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-S4-EVOaffected
Juniper NetworksJunos OS Evolved23.4-EVO < 23.4R2-S4-EVOaffected
Juniper NetworksJunos OS Evolved24.2-EVO < 24.2R2-EVOaffected
Juniper NetworksJunos OS Evolved24.4-EVO < 24.4R1-S3-EVO, 24.4R2-EVOaffected

Weaknesses

  • CWE-440: CWE-440 Expected Behavior Violation

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References