SB2025091009 - Multiple vulnerabilities in Microsoft Excel
Published: September 10, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2025-54901)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Excel. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
2) Use-after-free (CVE-ID: CVE-2025-54896)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.
3) Out-of-bounds read (CVE-ID: CVE-2025-54898)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Excel. A remote attacker can create a specially crafted 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.
4) Free of Memory not on the Heap (CVE-ID: CVE-2025-54899)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to free of memory not on the heap issue in Microsoft Excel. A remote attacker can create a specially crafted file, trick the victim into opening it and execute arbitrary code on the target system.
5) Out-of-bounds read (CVE-ID: CVE-2025-54902)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Microsoft Excel. A remote attacker can create a specially crafted 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.
6) Use-after-free (CVE-ID: CVE-2025-54903)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.
7) Use-after-free (CVE-ID: CVE-2025-54904)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the target system.
8) Heap-based buffer overflow (CVE-ID: CVE-2025-54900)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54901
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54896
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54898
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54899
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54902
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54903
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54904
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54900