CVE-2026-70105

Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70105	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:microsoft_365:-:::::macos::
	cpe:2.3:a:microsoft:office:2019:-:::::x64:*
	cpe:2.3:a:microsoft:office:2019:-:::::x86:*
	cpe:2.3:a:microsoft:office_2021:-::::ltsc:-:x64:
	cpe:2.3:a:microsoft:office_2021:-::::ltsc:-:x86:
	cpe:2.3:a:microsoft:office_2021:-::::ltsc:macos:-:
	cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x64:
	cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x86:
	cpe:2.3:a:microsoft:office_2024:-::::ltsc:macos:-:
	cpe:2.3:a:microsoft:word:2016::::::x64:
	cpe:2.3:a:microsoft:word:2016::::::x86:

History

26 Oct 2026, 10:10

Type	Values Removed	Values Added
Summary		(es) Validación de entrada inadecuada en Microsoft Office Word permite a un atacante no autorizado divulgar información a través de una red.

Information

Published : 2026-08-20 22:18

Updated : 2026-10-26 10:10

NVD link : CVE-2026-70105

Mitre link : CVE-2026-70105

CVE.ORG link : CVE-2026-70105

JSON object : View

Products Affected

microsoft

word
office_2024
office
office_2021
microsoft_365

CWE

CWE-20

Improper Input Validation

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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"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 2019", "versions": [{"status": "affected", "version": "19.0.0", "lessThan": "https://aka.ms/OfficeSecurityReleases", "versionType": "custom"}], "platforms": ["32-bit Systems", "x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft Office 365 for Mac", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "16.112.26081010", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC 2021", "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 2024", "versions": [{"status": "affected", "version": "16.0.0", "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": "16.112.26081010", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Office LTSC for Mac 2024", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.112.26081010", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft Word 2016", "versions": [{"status": "affected", "version": "16.0.1", "lessThan": "16.0.5565.1000", "versionType": "custom"}], "platforms": ["32-bit Systems", "x64-based Systems"]}]}], "published": "2026-08-20T22:18:01.723", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70105", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network."}, {"lang": "es", "value": "Validaci\u00f3n de entrada inadecuada en Microsoft Office Word permite a un atacante no autorizado divulgar informaci\u00f3n a trav\u00e9s de una red."}], "lastModified": "2026-10-26T10:10:00.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": 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