{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-45472: Microsoft Office Remote Code Execution Vulnerability","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-45472","status":"final","version":"1","initial_release_date":"2026-06-09T17:04:21.959Z","current_release_date":"2026-06-10T17:53:17.101Z","revision_history":[{"date":"2026-06-09T17:04:21.959Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-45472 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-45472"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-45472"},{"category":"external","summary":"Microsoft Office Remote Code Execution Vulnerability","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45472"}]},"product_tree":{"branches":[{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft 365 Apps for Enterprise","branches":[{"category":"product_version_range","name":">=16.0.1 <https://aka.ms/OfficeSecurityReleases","product":{"name":"Microsoft Microsoft 365 Apps for Enterprise >=16.0.1 <https://aka.ms/OfficeSecurityReleases","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_365_apps_for_enterprise:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office 2016","branches":[{"category":"product_version_range","name":">=16.0.0 <16.0.5556.1005","product":{"name":"Microsoft Microsoft Office 2016 >=16.0.0 <16.0.5556.1005","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_2016:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office 2019","branches":[{"category":"product_version_range","name":">=19.0.0 <https://aka.ms/OfficeSecurityReleases","product":{"name":"Microsoft Microsoft Office 2019 >=19.0.0 <https://aka.ms/OfficeSecurityReleases","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_2019:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office 365 for Mac","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office 365 for Mac -","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_365_for_mac:-:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office for Android","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office for Android -","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_for_android:-:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office LTSC 2021","branches":[{"category":"product_version_range","name":">=16.0.1 <https://aka.ms/OfficeSecurityReleases","product":{"name":"Microsoft Microsoft Office LTSC 2021 >=16.0.1 <https://aka.ms/OfficeSecurityReleases","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_ltsc_2021:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office LTSC 2024","branches":[{"category":"product_version_range","name":">=16.0.0 <https://aka.ms/OfficeSecurityReleases","product":{"name":"Microsoft Microsoft Office LTSC 2024 >=16.0.0 <https://aka.ms/OfficeSecurityReleases","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_ltsc_2024:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office LTSC for Mac 2021","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office LTSC for Mac 2021 -","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_ltsc_for_mac_2021:-:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Microsoft","branches":[{"category":"product_name","name":"Microsoft Office LTSC for Mac 2024","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office LTSC for Mac 2024 -","product_id":"CSAFPID-9","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_ltsc_for_mac_2024:-:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-45472","title":"Microsoft Office Remote Code Execution Vulnerability","notes":[{"category":"description","text":"Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.","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"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","baseScore":8.4,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 16.0.5556.1005, https://aka.ms/OfficeSecurityReleases.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45472"}]}]}