CVE-2026-58534: Windows Input Method Editor (IME) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.
Other sources
Windows Input Method Editor (IME) Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9339Patch KB5099535 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33158Patch KB5099536 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2525Patch KB5101649 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.8875Patch KB5101650 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7548Patch KB5099539 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5386Patch KB5099540 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9020Patch KB5099538 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7548Patch KB5099539 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.8875Patch KB5101650
Event History
Frequently Asked Questions
What is the severity of CVE-2026-58534?
CVE-2026-58534 has a high severity rating of 8.8.
What is CVE-2026-58534?
CVE-2026-58534 is a vulnerability in the Windows Input Method Editor (IME) that allows an attacker to elevate privileges locally due to a heap-based buffer overflow.
How do I fix CVE-2026-58534?
To fix CVE-2026-58534, ensure that your Microsoft Windows operating system and Input Method Editor (IME) are updated to the latest security patches provided by Microsoft.
Which systems are affected by CVE-2026-58534?
CVE-2026-58534 affects Microsoft Windows 10, Windows 11, and multiple versions of Windows Server including 2016, 2019, 2022, and 2025.
What kind of attack can exploit CVE-2026-58534?
CVE-2026-58534 can be exploited by an authorized attacker to elevate their privileges on a vulnerable system.