Windows Graphics Component Remote Code Execution Vulnerability

Source data

Overview

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

Impact & technical details

Remote Code Execution

Is the Preview Pane an attack vector for this vulnerability? No, the Preview Pane is not an attack vector.

How could an attacker exploit this vulnerability? An attacker could send a specially crafted RTF file and convince a user to open it in Microsoft Word and save it as a filtered web page. Successful exploitation could allow the attacker to execute code in the user's context. Authentication is not required.

Are the updates for Microsoft Office LTSC for Mac 2021 and 2024 currently available? Yes. As of September 16, 2026, the security update for Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac are available. Customers running Microsoft Office LTSC for Mac 2021, 2024 and Microsoft Office 365 for Mac should ensure the update is installed to be protected from this vulnerability.

CVSS base score

8.8 / 10

CVSS vector

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

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

• Microsoft 365 Apps for Enterprise for 32-bit Systems
• Microsoft 365 Apps for Enterprise for 64-bit Systems
• Microsoft Office 2016 (32-bit edition)
• Microsoft Office 2016 (64-bit edition)
• Microsoft Office 2019 for 32-bit editions
• Microsoft Office 2019 for 64-bit editions
• Microsoft Office 365 for Mac
• Microsoft Office LTSC 2021 for 32-bit editions

Source guidance

Remediation

• Release Notes

At least one Microsoft vendor-fix reference is available. Check each affected product for its applicable update, prerequisites, and supported version.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

• Microsoft Security Response Center (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft security update · 5002916 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft security update · 5122876 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5122882 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5122878 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5122871 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5124008 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5122880 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5124012 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5122874 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5123065 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5123066 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)