MSRC_CVE-2026-42832
Vulnerability from csaf_microsoft - Published: 2026-05-12 07:00 - Updated: 2026-05-12 07:00Summary
Microsoft Office Spoofing Vulnerability
Severity
Important
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.
CWE-284
- Improper Access Control
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Microsoft Word for Android 16.0.19822.20190
Microsoft Word for Android
|
16.0.19822.20190 | ||
|
Microsoft Office LTSC for Mac 2021 16.109.26051019
Microsoft Office LTSC for Mac 2021
|
16.109.26051019 | ||
|
Microsoft Excel for Android 16.0.19822.20190
Microsoft Excel for Android
|
16.0.19822.20190 | ||
|
Microsoft Office LTSC for Mac 2024 16.109.26051019
Microsoft Office LTSC for Mac 2024
|
16.109.26051019 |
Known affected
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Microsoft Office LTSC for Mac 2024 <16.109.26051019
Microsoft Office LTSC for Mac 2024
|
<16.109.26051019 |
Vendor Fix
fix
|
|
|
Microsoft Excel for Android <16.0.19822.20190
Microsoft Excel for Android
|
<16.0.19822.20190 |
Vendor Fix
fix
|
|
|
Microsoft Office LTSC for Mac 2021 <16.109.26051019
Microsoft Office LTSC for Mac 2021
|
<16.109.26051019 |
Vendor Fix
fix
|
|
|
Microsoft Word for Android <16.0.19822.20190
Microsoft Word for Android
|
<16.0.19822.20190 |
Vendor Fix
fix
|
Threats
Impact
Spoofing
Exploit Status
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely
References
7 references
Acknowledgments
<a href="https://twitter.com/yanir_">Yanir Tsarimi</a>
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"distribution": {
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"notes": [
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"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
},
{
"category": "general",
"text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
"title": "Customer Action"
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"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
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"references": [
{
"category": "self",
"summary": "CVE-2026-42832 Microsoft Office Spoofing Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42832"
},
{
"category": "self",
"summary": "CVE-2026-42832 Microsoft Office Spoofing Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-42832.json"
},
{
"category": "external",
"summary": "Microsoft Exploitability Index",
"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
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"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
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"title": "Microsoft Office Spoofing Vulnerability",
"tracking": {
"current_release_date": "2026-05-12T07:00:00.000Z",
"generator": {
"date": "2026-05-12T17:53:09.207Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
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},
"id": "msrc_CVE-2026-42832",
"initial_release_date": "2026-05-12T07:00:00.000Z",
"revision_history": [
{
"date": "2026-05-12T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c16.0.19822.20190",
"product": {
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"product_id": "4"
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"product": {
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"product_id": "11772"
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},
{
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],
"category": "product_name",
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},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c16.109.26051019",
"product": {
"name": "Microsoft Office LTSC for Mac 2021 \u003c16.109.26051019",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "16.109.26051019",
"product": {
"name": "Microsoft Office LTSC for Mac 2021 16.109.26051019",
"product_id": "11951"
}
}
],
"category": "product_name",
"name": "Microsoft Office LTSC for Mac 2021"
},
{
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"product": {
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"product_id": "1"
}
},
{
"category": "product_version",
"name": "16.109.26051019",
"product": {
"name": "Microsoft Office LTSC for Mac 2024 16.109.26051019",
"product_id": "12440"
}
}
],
"category": "product_name",
"name": "Microsoft Office LTSC for Mac 2024"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-42832",
"cwe": {
"id": "CWE-284",
"name": "Improper Access Control"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "No, the Preview Pane is not an attack vector.",
"title": "Is the Preview Pane an attack vector for this vulnerability?"
}
],
"product_status": {
"fixed": [
"11772",
"11951",
"12031",
"12440"
],
"known_affected": [
"1",
"2",
"3",
"4"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-42832 Microsoft Office Spoofing Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42832"
},
{
"category": "self",
"summary": "CVE-2026-42832 Microsoft Office Spoofing Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-42832.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2026-05-12T07:00:00.000Z",
"details": "16.0.19822.20190:Security Update:https://play.google.com/store/apps/details?id=com.microsoft.office.word\u0026hl=en_US",
"product_ids": [
"4"
],
"url": "https://play.google.com/store/apps/details?id=com.microsoft.office.word\u0026hl=en_US"
},
{
"category": "vendor_fix",
"date": "2026-05-12T07:00:00.000Z",
"details": "16.0.19822.20190:Security Update:https://play.google.com/store/apps/details?id=com.microsoft.office.excel\u0026hl=en_US",
"product_ids": [
"2"
],
"url": "https://play.google.com/store/apps/details?id=com.microsoft.office.excel\u0026hl=en_US"
},
{
"category": "vendor_fix",
"date": "2026-05-12T07:00:00.000Z",
"details": "16.109.26051019:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049",
"product_ids": [
"3",
"1"
],
"url": "https://go.microsoft.com/fwlink/p/?linkid=831049"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 6.7,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1",
"2",
"3",
"4"
]
}
],
"threats": [
{
"category": "impact",
"details": "Spoofing"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely"
}
],
"title": "Microsoft Office Spoofing Vulnerability"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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