Microsoft Graphics Component
CVE-2026-81955 — Windows Graphics Component Remote Code Execution Vulnerability
Executive Summary
Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Overview
8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
40 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office 2016 (32-bit edition) | 5002916 (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office 2016 (64-bit edition) | 5002916 (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office 2019 for 32-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office 2019 for 64-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office 365 for Mac Critical Remote Code Execution None Base: 8.8 Temporal: 7.7 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 Unknown Unknown None Microsoft Office LTSC 2021 for 32-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office LTSC 2021 for 64-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office LTSC 2024 for 32-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office LTSC 2024 for 64-bit editions | Release Notes (Security Update) |
Critical | Remote Code Execution | Unknown |
| Microsoft Office LTSC for Mac 2021 Critical Remote Code Execution None Base: 8.8 Temporal: 7.7 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 Unknown Unknown None Microsoft Office LTSC for Mac 2024 Critical Remote Code Execution None Base: 8.8 Temporal: 7.7 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 Unknown Unknown None Windows 10 Version 1607 for 32-bit Systems | 5122874 (Servicing Stack Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1607 for x64-based Systems | 5122874 (Servicing Stack Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 5122876 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5122876 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for 32-bit Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5122878 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for ARM64-based Systems | 5122880 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 23H2 for x64-based Systems | 5122880 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | 5124008 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5124008 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 25H2 for ARM64-based Systems | 5124008 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 25H2 for x64-based Systems | 5124008 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 Version 26H1 for ARM64-based Systems | 5124012 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows 11 version 26H1 for x64-based Systems | 5124012 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 | 5123065 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 (Server Core installation) | 5123065 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 | 5123066 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2012 R2 (Server Core installation) | 5123066 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 | 5122874 (Servicing Stack Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2016 (Server Core installation) | 5122874 (Servicing Stack Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 | 5122876 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2019 (Server Core installation) | 5122876 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 | 5122882 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2022 (Server Core installation) | 5122882 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 | 5122871 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2025 (Server Core installation) | 5122871 (Security Update) |
Critical | Remote Code Execution | Yes |
Patches
12 patches
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Unknown |
5002916 |
Security Update | Unknown |
5122874 |
Servicing Stack Update | Yes |
5122876 |
Security Update | Yes |
5122878 |
Security Update | Yes |
5122880 |
Security Update | Yes |
5124008 |
Security Update | Yes |
5124012 |
Security Update | Yes |
5123065 |
Monthly Rollup | Yes |
5123066 |
Monthly Rollup | Yes |
5122882 |
Security Update | Yes |
5122871 |
Security Update | Yes |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
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References
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