Vulnerability Details CVE-2024-39540
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on SRX Series, and MX Series with SPC3 allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
When an affected device receives specific valid TCP traffic, the pfe crashes and restarts leading to a momentary but complete service outage.
This issue affects Junos OS:
21.2 releases from 21.2R3-S5 before 21.2R3-S6.
This issue does not affect earlier or later releases.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 46.3%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2024-39540
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cpe:2.3:h:juniper:csrx:-
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cpe:2.3:h:juniper:mx240:-
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cpe:2.3:h:juniper:mx480:-
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cpe:2.3:h:juniper:mx960:-
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cpe:2.3:h:juniper:srx100:-
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cpe:2.3:h:juniper:srx110:-
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cpe:2.3:h:juniper:srx1400:-
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cpe:2.3:h:juniper:srx1500:-
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cpe:2.3:h:juniper:srx1600:-
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cpe:2.3:h:juniper:srx210:-
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cpe:2.3:h:juniper:srx220:-
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cpe:2.3:h:juniper:srx2300:-
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cpe:2.3:h:juniper:srx240:-
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cpe:2.3:h:juniper:srx240h2:-
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cpe:2.3:h:juniper:srx240m:-
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cpe:2.3:h:juniper:srx300:-
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cpe:2.3:h:juniper:srx320:-
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cpe:2.3:h:juniper:srx3400:-
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cpe:2.3:h:juniper:srx340:-
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cpe:2.3:h:juniper:srx345:-
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cpe:2.3:h:juniper:srx3600:-
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cpe:2.3:h:juniper:srx380:-
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cpe:2.3:h:juniper:srx4000:-
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cpe:2.3:h:juniper:srx4100:-
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cpe:2.3:h:juniper:srx4200:-
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cpe:2.3:h:juniper:srx4300:-
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cpe:2.3:h:juniper:srx4600:-
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cpe:2.3:h:juniper:srx4700:-
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cpe:2.3:h:juniper:srx5000:-
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cpe:2.3:h:juniper:srx5400:-
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cpe:2.3:h:juniper:srx550:-
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cpe:2.3:h:juniper:srx550_hm:-
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cpe:2.3:h:juniper:srx550m:-
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cpe:2.3:h:juniper:srx5600:-
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cpe:2.3:h:juniper:srx5800:-
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cpe:2.3:h:juniper:srx650:-
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cpe:2.3:h:juniper:vsrx:-
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cpe:2.3:o:juniper:junos:21.2