{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-45457: Microsoft Word Remote Code Execution Vulnerability","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-45457","status":"final","version":"1","initial_release_date":"2026-06-09T17:05:24.019Z","current_release_date":"2026-06-10T17:54:14.429Z","revision_history":[{"date":"2026-06-09T17:05:24.019Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-45457 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-45457"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-45457"},{"category":"external","summary":"Microsoft Word Remote Code Execution Vulnerability","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45457"}]},"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 365 for Mac","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office 365 for Mac -","product_id":"CSAFPID-2","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 LTSC for Mac 2021","branches":[{"category":"product_version","name":"-","product":{"name":"Microsoft Microsoft Office LTSC for Mac 2021 -","product_id":"CSAFPID-3","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-4","product_identification_helper":{"cpe":"cpe:2.3:a:microsoft:microsoft_office_ltsc_for_mac_2024:-:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-45457","title":"Microsoft Word Remote Code Execution Vulnerability","notes":[{"category":"description","text":"Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","baseScore":7.8,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: https://aka.ms/OfficeSecurityReleases.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45457"}]}]}