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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database

Vulnerability Change Records for CVE-2026-71922

Change History

New CVE Received from VulnCheck 8/24/2026 2:17:07 PM

Action Type Old Value New Value
Added Description 

                  
                
              		

              
                
                  
                  
                    
Multiple DrayTek VigorSwitch models contain a pre-authentication null pointer dereference vulnerability in the setget.cgi interface. The vulnerability is caused by missing validation when the pass field is absent. A remote attacker can trigger this vulnerability via a crafted request to crash the service and cause a denial of service.

                  
                
              		
            

            

              Added
              CVSS V4.0

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

                  
                
              		
            

            

              Added
              CVSS V3.1

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

                  
                
              		
            

            

              Added
              CWE

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
CWE-476

                  
                
              		
            

            

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              Reference

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/

                  
                
              		
            

            

              Added
              Reference

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-pre-authentication-null-pointer-dereference-via-setget-cgi

                  
                
              		
            

            

              Added
              Affected

              
                
                  
                  
                    

                  
                
              		

              
                
                  
                  
                    
[{"vendor":"DrayTek Corporation","product":"VigorSwitch G2540xs","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2540xs","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch FX2120","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2282x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.10.6","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2282x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.10.6","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch Q2300x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.10.7","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch PQ2300xb","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.10.7","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2542x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.10.6","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2542x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.10.6","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2542xh","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.10.6","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch PX2060","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G1280","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P1280","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P1281x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G1282","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P1282","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2121","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2121","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch PQ2121x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch Q2121x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2280x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2280x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch Q2200x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch PQ2200xb","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2100","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2100","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch G2540x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]},{"vendor":"DrayTek Corporation","product":"VigorSwitch P2540x","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"2.9.10","versionType":"custom","status":"affected"}]}]