CVE-2026-70242 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

Vendors	Products
Microsoft Subscribe	365 Apps Subscribe Office 2021 Subscribe Office 2024 Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70242

History

Wed, 14 Oct 2026 00:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 13 Oct 2026 19:15:00 +0000

Type	Values Removed	Values Added
Description		Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Title		Microsoft Office Outlook Remote Code Execution Vulnerability
First Time appeared		Microsoft Microsoft 365 Apps Microsoft office 2021 Microsoft office 2024
Weaknesses		CWE-122
CPEs		cpe:2.3:a:microsoft:365_apps:::::enterprise:::* cpe:2.3:a:microsoft:office_2021:::::long_term_servicing_channel:::* cpe:2.3:a:microsoft:office_2024:::::long_term_servicing_channel:::*
Vendors & Products		Microsoft Microsoft 365 Apps Microsoft office 2021 Microsoft office 2024
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70242
Metrics		cvssV3_1 `{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T19:01:13.424Z

Updated: 2026-10-13T22:23:36.066Z

Reserved: 2026-08-03T23:54:57.811Z

Link: CVE-2026-70242

Vulnrichment

Updated: 2026-10-13T20:50:07.763Z

NVD

Status : Awaiting Analysis

Published: 2026-10-13T19:19:40.990

Modified: 2026-10-13T21:18:11.363

Link: CVE-2026-70242

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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