{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-27671: Memory Corruption vulnerability in Application Server ABAP of SAP NetWeaver and ABAP Platform","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-27671","status":"final","version":"1","initial_release_date":"2026-06-09T00:20:04.299Z","current_release_date":"2026-06-09T13:03:56.011Z","revision_history":[{"date":"2026-06-09T00:20:04.299Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-27671 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-27671"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-27671"},{"category":"external","summary":"me.sap.com","url":"https://me.sap.com/notes/3717897"},{"category":"external","summary":"url.sap","url":"https://url.sap/sapsecuritypatchday"}]},"product_tree":{"branches":[{"category":"vendor","name":"SAP_SE","branches":[{"category":"product_name","name":"SAP NetWeaver AS ABAP and ABAP Platform","branches":[{"category":"product_version","name":"KRNL64NUC 7.22","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform KRNL64NUC 7.22","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.22EXT","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.22EXT","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"KRNL64UC 7.22","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform KRNL64UC 7.22","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"722EXT","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 722EXT","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.53","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.53","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"KERNEL 7.22","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform KERNEL 7.22","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.54","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.54","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.77","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.77","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.89","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.89","product_id":"CSAFPID-9","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.93","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 7.93","product_id":"CSAFPID-10","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"9.16","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 9.16","product_id":"CSAFPID-11","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"9.18","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 9.18","product_id":"CSAFPID-12","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"91.9","product":{"name":"SAP_SE SAP NetWeaver AS ABAP and ABAP Platform 91.9","product_id":"CSAFPID-13","product_identification_helper":{"cpe":"cpe:2.3:a:sap_se:sap_netweaver_as_abap_and_abap_platform:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-27671","title":"Memory Corruption vulnerability in Application Server ABAP of SAP NetWeaver and ABAP Platform","notes":[{"category":"description","text":"Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10","CSAFPID-11","CSAFPID-12","CSAFPID-13"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10","CSAFPID-11","CSAFPID-12","CSAFPID-13"]}],"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","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10","CSAFPID-11","CSAFPID-12","CSAFPID-13"]}]}]}