CVE-2026-88185

HIGH
MEDIUM Priority: 0.06 BB Relevance: 66/100
Published: 2026-10-13 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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

Affected Software (27)

VendorProductVersion
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.114.26101123
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.114.26101123
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.114.26101123
Microsoft Microsoft Office LTSC 2021 16.0.1 < 16.0.14334.20974
Microsoft Microsoft Office LTSC 2021 16.0.1 < 16.0.14334.20974
Microsoft Microsoft Office LTSC 2021 16.0.1 < 16.0.14334.20974
Microsoft Microsoft Office LTSC 2024 16.0.0 < 16.0.17932.21056
Microsoft Microsoft Office LTSC 2024 16.0.0 < 16.0.17932.21056
Microsoft Microsoft Office LTSC 2024 16.0.0 < 16.0.17932.21056
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.114.26101123
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.114.26101123
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.114.26101123
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.114.26101123
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.114.26101123
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.114.26101123
microsoft 365_apps -
microsoft 365_apps -
microsoft microsoft_365 -
microsoft office_2021 -
microsoft office_2021 -
microsoft office_2021 -
microsoft office_2024 -
microsoft office_2024 -
microsoft office_2024 -

References & Advisories (1)

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.78%
Raw Score 0.007800
Percentile 55.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00780
2026-10-28
0.00780

Intelligence Sources

mitre ref →