SB2025070858 - Multiple vulnerabilities in Microsoft Windows Input Method Editor (IME)

Description

This security bulletin contains information about 3 vulnerabilities.

1) Race condition (CVE-ID: CVE-2025-47972)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a race condition in Windows Input Method Editor (IME). A remote user can trick a victim to open a specially crafted file and escalate privileges on the system.

2) Use-after-free (CVE-ID: CVE-2025-47991)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Input Method Editor (IME). A local user can win a race condition and gain elevated privileges on the target system.

3) Out-of-bounds read (CVE-ID: CVE-2025-49687)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Windows Input Method Editor (IME). A local user can trigger an out-of-bounds read error and read contents of memory on the system, leading to privilege escalation.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47972
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47991
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49687