Detections
Analytics
Security Updates for Microsoft Office Products C2R (June 2026)
high Nessus Plugin ID 320866
Synopsis
The Microsoft Office Products are affected by multiple vulnerabilities.Description
The Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:- Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
(CVE-2026-44819, CVE-2026-44824, CVE-2026-45461, CVE-2026-45463, CVE-2026-45472, CVE-2026-45474, CVE-2026-45475, CVE-2026-45645)
- Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
(CVE-2026-44821, CVE-2026-45460, CVE-2026-45485)
- Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally. (CVE-2026-47635)
- Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally. (CVE-2026-47293)
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, 2021 or 2024, ensure automatic updates are enabled or open any office app and manually perform an update.
See Also
Plugin Details
Severity: High
ID: 320866
File Name: smb_nt_ms26_jun_office_c2r.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows
Published: 6/12/2026
Updated: 6/12/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-45461
CVSS v3
Risk Factor: High
Base Score: 8.4
Temporal Score: 7.3
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS Score Source: CVE-2026-45461
Vulnerability Information
CPE: cpe:/a:microsoft:office
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Ease: No known exploits are available
Patch Publication Date: 6/10/2026
Vulnerability Publication Date: 6/10/2026
Reference Information
CVE: CVE-2026-44819, CVE-2026-44821, CVE-2026-44824, CVE-2026-45460, CVE-2026-45461, CVE-2026-45463, CVE-2026-45472, CVE-2026-45474, CVE-2026-45475, CVE-2026-45485, CVE-2026-45645, CVE-2026-47293, CVE-2026-47635
IAVA: 2026-A-0570