{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-50751: User Authentication Bypass in VPN Remote Access and Mobile Access","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-50751","status":"final","version":"1","initial_release_date":"2026-06-08T11:07:15.746Z","current_release_date":"2026-06-10T13:37:27.725Z","revision_history":[{"date":"2026-06-08T11:07:15.746Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-50751 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-50751"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-50751"},{"category":"external","summary":"support.checkpoint.com","url":"https://support.checkpoint.com/results/sk/sk185033"}]},"product_tree":{"branches":[{"category":"vendor","name":"checkpoint","branches":[{"category":"product_name","name":"Quantum Security Gateway","branches":[{"category":"product_version","name":"R82.10 with Jumbo Hotfix Take 19 or below","product":{"name":"checkpoint Quantum Security Gateway R82.10 with Jumbo Hotfix Take 19 or below","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:checkpoint:quantum_security_gateway:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"R82 with Jumbo Hotfix Take 103 or below","product":{"name":"checkpoint Quantum Security Gateway R82 with Jumbo Hotfix Take 103 or below","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:checkpoint:quantum_security_gateway:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"R81.20 with Jumbo Hotfix Take 141 or below","product":{"name":"checkpoint Quantum Security Gateway R81.20 with Jumbo Hotfix Take 141 or below","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:checkpoint:quantum_security_gateway:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"R81.10, R81, and R80.40","product":{"name":"checkpoint Quantum Security Gateway R81.10, R81, and R80.40","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:checkpoint:quantum_security_gateway:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"checkpoint","branches":[{"category":"product_name","name":"Spark Firewalls","branches":[{"category":"product_version","name":"R80.20.X, R81.10.X, and R82.00.X","product":{"name":"checkpoint Spark Firewalls R80.20.X, R81.10.X, and R82.00.X","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:checkpoint:spark_firewalls:r80.20.x\\,_r81.10.x\\,_and_r82.00.x:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-50751","title":"User Authentication Bypass in VPN Remote Access and Mobile Access","notes":[{"category":"description","text":"A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","baseScore":9.3,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5"]}]}]}