Detections
Analytics
Security Updates for Microsoft Outlook Products C2R (August 2026)
high Nessus Plugin ID 335112
Synopsis
The Microsoft Outlook Products are affected by multiple vulnerabilities.Description
The Microsoft Outlook Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:- Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. (CVE-2026-70329)
- Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
(CVE-2026-63518)
- Insufficiently protected credentials in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network. (CVE-2026-62882)
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 patches to address these issues.For Office 365, Office 2016 C2R, or Office 2019, ensure automatic updates are enabled or open any office app and manually perform an update.
See Also
Plugin Details
Severity: High
ID: 335112
File Name: smb_nt_ms26_aug_outlook_c2r.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows
Published: 8/13/2026
Updated: 8/13/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.15
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-70329
CVSS v3
Risk Factor: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:outlook
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Patch Publication Date: 8/11/2026
Vulnerability Publication Date: 8/11/2026