SB2025040924 - Multiple vulnerabilities in Microsoft Word

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Acceptance of Extraneous Untrusted Data With Trusted Data (CVE-ID: CVE-2025-29816)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper input validation in Microsoft Word. A remote attacker can bypass specific functionality of the Office Protected View.

2) Untrusted Pointer Dereference (CVE-ID: CVE-2025-27747)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to untrusted pointer dereference in Microsoft Word. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.

3) Use-after-free (CVE-ID: CVE-2025-29820)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Microsoft Word. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29816
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27747
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29820