SB2026061062 - Multiple vulnerabilities in Microsoft Word

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Main Vulnerability Database SB2026061062

SB2026061062 - Multiple vulnerabilities in Microsoft Word

Published: June 10, 2026

Security Bulletin ID SB2026061062
CSH Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 80% Medium 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Untrusted Pointer Dereference (CVE-ID: CVE-2026-45471)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

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


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 Office file and execute arbitrary code on the system.


2) Out-of-bounds read (CVE-ID: CVE-2026-45457)

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

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


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Microsoft Word. A remote attacker can create a specially crafted Office file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system, leading to arbitrary code execution.


3) Untrusted Pointer Dereference (CVE-ID: CVE-2026-45643)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

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


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 Office file and execute arbitrary code on the system.


4) Heap-based buffer overflow (CVE-ID: CVE-2026-45466)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

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


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

The vulnerability exists due to a boundary error in Microsoft Word. A remote attacker can trick a victim to open a specially crafted Office file, trigger a heap-based buffer overflow and gain access to sensitive information on the target system.


5) Use-after-free (CVE-ID: CVE-2026-45486)

CWE-ID: CWE-416 - Use After Free

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


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 Office file and execute arbitrary code on the target system.


Remediation

Install update from vendor's website.

References