{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20944", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2025-12-04T20:04:16.339Z", "datePublished": "2026-01-13T17:56:45.984Z", "dateUpdated": "2026-04-01T13:48:55.631Z"}, "containers": {"cna": {"title": "Microsoft Word Remote Code Execution Vulnerability", "datePublic": "2026-01-13T16:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "16.0.1", "versionEndExcluding": "https://aka.ms/OfficeSecurityReleases"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:*", "versionStartIncluding": "16.0.1", "versionEndExcluding": "16.105.26011018"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:office_macos_2024:*:*:*:*:*:long_term_servicing_channel:*:*", "versionStartIncluding": "16.0.0", "versionEndExcluding": "16.105.26011018"}]}]}], "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 for Mac 2021", "versions": [{"version": "16.0.1", "lessThan": "16.105.26011018", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC for Mac 2024", "versions": [{"version": "16.0.0", "lessThan": "16.105.26011018", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-125: Out-of-bounds Read", "lang": "en-US", "type": "CWE", "cweId": "CWE-125"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-01T13:48:55.631Z"}, "references": [{"name": "Microsoft Word Remote Code Execution Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.4, "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"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20944", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-01-14T04:56:49.980301Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-26T15:04:27.698Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20944", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-01-14T04:56:49.980301Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-13T19:32:44.080Z"}}], "cna": {"title": "Microsoft Word Remote Code Execution Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 8.4, "baseSeverity": "HIGH", "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"}, "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 for Mac 2021", "versions": [{"status": "affected", "version": "16.0.1", "lessThan": "16.105.26011018", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC for Mac 2024", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.105.26011018", "versionType": "custom"}]}], "datePublic": "2026-01-13T16:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944", "name": "Microsoft Word Remote Code Execution Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125: Out-of-bounds Read"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "versionEndExcluding": "https://aka.ms/OfficeSecurityReleases", "versionStartIncluding": "16.0.1"}, {"criteria": "cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:*", "vulnerable": true, "versionEndExcluding": "16.105.26011018", "versionStartIncluding": "16.0.1"}, {"criteria": "cpe:2.3:a:microsoft:office_macos_2024:*:*:*:*:*:long_term_servicing_channel:*:*", "vulnerable": true, "versionEndExcluding": "16.105.26011018", "versionStartIncluding": "16.0.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-01T13:48:55.631Z"}}}, "cveMetadata": {"cveId": "CVE-2026-20944", "state": "PUBLISHED", "dateUpdated": "2026-04-01T13:48:55.631Z", "dateReserved": "2025-12-04T20:04:16.339Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-01-13T17:56:45.984Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"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_long_term_servicing_channel:2021:*:*:*:*:macos:*:*", "matchCriteriaId": "BF0E8112-5B6F-4E55-8E40-38ADCF6FC654", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*", "matchCriteriaId": "EF3E56B5-E6A6-4061-9380-D421E52B9199", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally."}], "id": "CVE-2026-20944", "lastModified": "2026-01-16T16:15:25.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-01-13T18:16:21.850", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-16T08:16:29.530176+00:00", "value": {"mitigation_remediation": ["Apply the vendor\u2019s latest Office update released through Microsoft\u202fIntune or the Microsoft Update service.", "Configure Office to automatically install available updates and verify that the update for CVE\u20112026\u201120944 is in place.", "Enable application control or sandboxing for Office to prevent execution of unauthorized code when opening documents."], "summary": {"action": "Immediate Patch", "impact": "Local code execution"}, "threat_synthesis": {"affected_systems": "The vulnerability impacts Microsoft 365 Apps for Enterprise, Microsoft Office LTSC for Mac 2021, and Microsoft Office LTSC for Mac 2024 users. All affected versions of these products are listed in the CNA product matrix.", "description_and_impact": "An out-of-bounds read occurs in Microsoft Office Word when a specially crafted document is opened, allowing an attacker to execute arbitrary code locally with the privileges of the user. This result in compromise of confidentiality, integrity, and availability of the system, as the attacker could install malware, exfiltrate data, or alter system settings.", "risk_and_exploitability": "The flaw carries a CVSS score of 8.4, classifying it as high severity, while the EPSS score is below 1%, indicating a low current exploitation probability. It is not listed in CISA\u2019s KEV catalog. Attackers could trigger the exploit by delivering a malicious Word document via phishing, social engineering, or unsecured downloads, leading to local code execution on the victim\u2019s machine."}}}}, "created": "2026-04-16T08:30:29.830830+00:00", "updated": "2026-04-16T08:30:29.830854+00:00", "vendors": []}