Detections
Analytics
Security Updates for Microsoft Office Products (August 2026)
high Nessus Plugin ID 334616
Synopsis
The Microsoft Office Products are affected by multiple vulnerabilities.Description
The Microsoft Office Products are missing a security update. They are, therefore, affected by multiple vulnerabilities:- Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. (CVE-2026-63513, CVE-2026-63533, CVE-2026-65661)
- Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally. (CVE-2026-63532, CVE-2026-64903)
- Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally. (CVE-2026-63517, CVE-2026-63524, CVE-2026-63529, CVE-2026-64899)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Microsoft has released the following security updates to address this issue:- KB5002791
- KB5002795
- KB5002897
- KB5002900
- KB5002902
See Also
https://support.microsoft.com/en-us/help/5002791
https://support.microsoft.com/en-us/help/5002795
https://support.microsoft.com/en-us/help/5002897
Plugin Details
Severity: High
ID: 334616
File Name: smb_nt_ms26_aug_office.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 8/11/2026
Updated: 8/11/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
CVSS v2
Risk Factor: High
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-65661
CVSS v3
Risk Factor: High
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:office
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Patch Publication Date: 8/11/2026
Vulnerability Publication Date: 8/11/2026
Reference Information
CVE: CVE-2026-63513, CVE-2026-63515, CVE-2026-63517, CVE-2026-63524, CVE-2026-63526, CVE-2026-63529, CVE-2026-63532, CVE-2026-63533, CVE-2026-64899, CVE-2026-64903, CVE-2026-64909, CVE-2026-65661, CVE-2026-70317