CVE-2026-105598

HIGH CVSS 3.1: 8.8 EPSS 0.82%
Updated Oct 15, 2026
Microsoft
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 16.0.0 — https://aka.ms/OfficeSecurityReleases
Fixed In 16.0.14334.20974
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Microsoft
Public PoC No

Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 9

Configuration From (including) Up to (excluding)
Microsoft Office_2021
cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*
16.0.1 16.0.14334.20974
Microsoft Office_2024
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
16.0.0 16.0.17932.21056
Microsoft 365_Apps
cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
16.0.1 https://aka.ms/OfficeSecurityReleases
Microsoft 365_Apps
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
— —
Microsoft 365_Apps
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
— —
Microsoft Office_2021
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
— —
Microsoft Office_2021
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
— —
Microsoft Office_2024
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
— —
Microsoft Office_2024
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
— —