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 0.005
                        
                    
                    
                        
                            EPSS Ranking 65.9%
                        
                    
                 
                
                    CVSS Severity
                    
                        
                            CVSS v3 Score 7.5
                        
                    
                    
                 
                
                
                
                    
                
                
                    
                        Products affected by CVE-2024-39540
                        
                            
                                
                                - 
                                    
                                    
                                
 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:mx240:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:mx480:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:mx960:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx100:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx110:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx1400:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx1500:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx1600:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx210:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx220:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx2300:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx240:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx240h2:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx240m:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx300:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx320:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx3400:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx340:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx345:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx3600:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx380:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4000:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4100:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4200:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4300:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4600:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx4700:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx5000:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx5400:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx550:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx550_hm:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx550m:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx5600:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx5800:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:h:juniper:srx650:-
                                        
                                     
                                 
                            
                                
                                - 
                                    
                                    
                                
 
                            
                                
                                - 
                                    
                                    
                                        
                                            cpe:2.3:o:juniper:junos:21.2