CVE-2025-52981

Summary

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on

SRX1600, SRX2300, SRX 4000 Series, and SRX5000 Series with SPC3

allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

If a sequence of specific PIM packets is received, this will cause a flowd crash and restart.

This issue affects Junos OS:

  • all versions before 21.2R3-S9,
  • 21.4 versions before 21.4R3-S11,
  • 22.2 versions before 22.2R3-S7,
  • 22.4 versions before 22.4R3-S6,
  • 23.2 versions before 23.2R2-S4,
  • 23.4 versions before 23.4R2-S4,
  • 24.2 versions before 24.2R2.

This is a similar, but different vulnerability than the issue reported as

CVE-2024-47503, published in JSA88133.

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-S6affected
Juniper NetworksJunos OS23.2 < 23.2R2-S4affected
Juniper NetworksJunos OS23.4 < 23.4R2-S4affected
Juniper NetworksJunos OS24.2 < 24.2R2affected

Weaknesses

  • CWE-754: CWE-754 Improper Check for Unusual or Exceptional Conditions

Workarounds

Minimize the PIM (Protocol Independent Multicast) session timeout value to be less than 5 seconds to avoid data session creation errors.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References