CVE-2026-32221: Windows Graphics Component Remote Code Execution Vulnerability
CVE-2026-32221 is a remote code execution vulnerability in Windows Graphics Component, rated Important by Microsoft, with a CVSS 3.1 base score of 8.4 (High). An attacker can exploit it by an attacker with local access, without any privileges and without user interaction. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. The EPSS model estimates a 0.29% probability of exploitation activity in the next 30 days, higher than 22% of all scored vulnerabilities. Microsoft released the fix on 14 April 2026 in the April 2026 Patch Tuesday, delivered through 3 security updates (KB5082063, KB5083769, KB5083768). It affects 8 products in 1 product family (Windows).
Key facts
- CVE ID
- CVE-2026-32221
- Severity
- High CVSS 8.4
- Microsoft severity
- Important
- Impact
- Remote Code Execution
- Exploited in the wild
- No
- Publicly disclosed
- No
- Exploitation likelihood
- Less Likely
- Weakness
- CWE-122
- EPSS
- 0.29% (percentile 22%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- April 2026 Patch Tuesday
- Product families
- Windows
CVSS score and vector
Microsoft scores CVE-2026-32221 at 8.4 (temporal 7.3) using CVSS 3.1. Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code locally.
Frequently asked questions (Microsoft)
According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?
The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.
Affected products (8)
Windows
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Windows Server 2025 (Server Core installation) | KB5082063 | Security Update | 10.0.26100.32690 | Yes |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5083769 | Security Update | 10.0.26200.8246 | Yes |
| Windows 11 Version 25H2 for x64-based Systems | KB5083769 | Security Update | 10.0.26200.8246 | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | ||||
| Windows 11 Version 24H2 for x64-based Systems | ||||
| Windows Server 2025 | KB5082063 | Security Update | 10.0.26100.32690 | Yes |
| Windows 11 Version 26H1 for ARM64-based Systems | KB5083768 | Security Update | 10.0.28000.1836 | Yes |
| Windows 11 version 26H1 for x64-based Systems | KB5083768 | Security Update | 10.0.28000.1836 | Yes |
Security updates (3)
NIST NVD data
- NVD status
- Analyzed
- NVD CVSS
- 8.4 (HIGH)
- NVD weakness
- CWE-122
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| windows 11 24h2 (arm64) | before 10.0.26100.8246 |
| windows 11 24h2 (x64) | before 10.0.26100.8246 |
| windows 11 25h2 (arm64) | before 10.0.26200.8246 |
| windows 11 25h2 (x64) | before 10.0.26200.8246 |
| windows 11 26h1 (arm64) | before 10.0.28000.1836 |
| windows 11 26h1 (x64) | before 10.0.28000.1836 |
| windows server 2025 | before 10.0.26100.32690 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32221 (Vendor Advisory)
Acknowledgments
- Anonymous
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |