CVE-2026-108451

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-108451", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-10-09T21:52:56.479Z", "datePublished": "2026-10-15T20:57:29.634Z", "dateUpdated": "2026-11-10T20:34:21.328Z"}, "containers": {"cna": {"title": "Microsoft Office Word Remote Code Execution Vulnerability", "datePublic": "2026-10-15T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*", "versionStartIncluding": "16.0.1", "versionEndExcluding": "16.0.14334.20974"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.0.17932.21056"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "16.0.1", "versionEndExcluding": "https://aka.ms/OfficeSecurityReleases"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft 365 Apps for Enterprise", "platforms": ["32-bit Systems", "x64-based Systems"], "versions": [{"version": "16.0.1", "lessThan": "https://aka.ms/OfficeSecurityReleases", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC 2021", "platforms": ["32-bit Systems", "x64-based Systems"], "versions": [{"version": "16.0.1", "lessThan": "16.0.14334.20974", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC 2024", "platforms": ["32-bit Systems", "x64-based Systems"], "versions": [{"version": "16.0.0", "lessThan": "16.0.17932.21056", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-197: Numeric Truncation Error", "lang": "en-US", "type": "CWE", "cweId": "CWE-197"}, {"description": "CWE-122: Heap-based Buffer Overflow", "lang": "en-US", "type": "CWE", "cweId": "CWE-122"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-11-10T20:34:21.328Z"}, "references": [{"name": "Microsoft Office Word Remote Code Execution Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108451"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-16T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-108451"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-17T03:55:40.208Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-108451", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T01:01:58.758918Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T01:03:27.747Z"}}], "cna": {"title": "Microsoft Office Word Remote Code Execution Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": "Microsoft 365 Apps for Enterprise", "versions": [{"status": "affected", "version": "16.0.1", "lessThan": "https://aka.ms/OfficeSecurityReleases", "versionType": "custom"}], "platforms": ["32-bit Systems", "x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC 2021", "versions": [{"status": "affected", "version": "16.0.1", "lessThan": "16.0.14334.20974", "versionType": "custom"}], "platforms": ["32-bit Systems", "x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC 2024", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.0.17932.21056", "versionType": "custom"}], "platforms": ["32-bit Systems", "x64-based Systems"]}], "datePublic": "2026-10-15T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108451", "name": "Microsoft Office Word Remote Code Execution Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-197", "description": "CWE-197: Numeric Truncation Error"}, {"lang": "en-US", "type": "CWE", "cweId": "CWE-122", "description": "CWE-122: Heap-based Buffer Overflow"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*", "vulnerable": true, "versionEndExcluding": "16.0.14334.20974", "versionStartIncluding": "16.0.1"}, {"criteria": "cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*", "vulnerable": true, "versionEndExcluding": "16.0.17932.21056", "versionStartIncluding": "16.0.0"}, {"criteria": "cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "versionEndExcluding": "https://aka.ms/OfficeSecurityReleases", "versionStartIncluding": "16.0.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-11-10T20:34:21.328Z"}}}, "cveMetadata": {"cveId": "CVE-2026-108451", "state": "PUBLISHED", "dateUpdated": "2026-11-10T20:34:21.328Z", "dateReserved": "2026-10-09T21:52:56.479Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-10-15T20:57:29.634Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"platforms": ["32-bit Systems", "x64-based Systems"], "product": "Microsoft 365 Apps for Enterprise", "vendor": "Microsoft", "versions": [{"lessThan": "https://aka.ms/OfficeSecurityReleases", "status": "affected", "version": "16.0.1", "versionType": "custom"}]}, {"platforms": ["32-bit Systems", "x64-based Systems"], "product": "Microsoft Office LTSC 2021", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.14334.20974", "status": "affected", "version": "16.0.1", "versionType": "custom"}]}, {"platforms": ["32-bit Systems", "x64-based Systems"], "product": "Microsoft Office LTSC 2024", "vendor": "Microsoft", "versions": [{"lessThan": "16.0.17932.21056", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}], "source": "secure@microsoft.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*", "matchCriteriaId": "3259EBFE-AE2D-48B8-BE9A-E22BBDB31378", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*", "matchCriteriaId": "CD25F492-9272-4836-832C-8439EBE64CCF", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*", "matchCriteriaId": "1D518075-3362-4D15-93B1-0E6C61518D16", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*", "matchCriteriaId": "1059BEC6-C30B-4F0F-A878-5267A21CBD85", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*", "matchCriteriaId": "55A9AFDA-D77B-4CC7-ACE5-3A2ABDA257D8", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*", "matchCriteriaId": "8887D177-26A3-4008-89B6-50A9E9830F13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network."}], "id": "CVE-2026-108451", "lastModified": "2026-10-19T20:36:26.677", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-108451", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-10-15T21:17:10.790", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108451"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}, {"lang": "en", "value": "CWE-197"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[16.0.1,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft 365 Apps for Enterprise", "source": "cna", "vendor": "Microsoft"}, "product": "365_apps", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[16.0.1,16.0.14334.20974)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Office LTSC 2021", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_office_ltsc_2021", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[16.0.0,16.0.17932.21056)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Office LTSC 2024", "source": "cna", "vendor": "Microsoft"}, "product": "microsoft_office_ltsc_2024", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[16.0.1,16.0.14334.20974)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Office LTSC 2021", "source": "cna", "vendor": "Microsoft"}, "product": "office_2021", "vendor": "microsoft"}, {"configurations": [{"platform": ["32-bit_systems", "x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[16.0.0,16.0.17932.21056)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Microsoft Office LTSC 2024", "source": "cna", "vendor": "Microsoft"}, "product": "office_2024", "vendor": "microsoft"}], "created": "2026-10-16T08:15:15.131736+00:00", "updated": "2026-10-23T20:30:17.531113+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$365_apps", "microsoft$PRODUCT$microsoft_office_ltsc_2021", "microsoft$PRODUCT$microsoft_office_ltsc_2024", "microsoft$PRODUCT$office_2021", "microsoft$PRODUCT$office_2024"]}