CVE-2026-55032

HIGH
MEDIUM Priority: 0.04 BB Relevance: 41/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Weakness Classification (1)

Affected Software (38)

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 Office 2019 19.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2019 19.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.111.26071215
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.111.26071215
Microsoft Microsoft Office LTSC 2021 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2021 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2024 16.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2024 16.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.111.26071215
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.111.26071215
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.111.26071215
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.111.26071215
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 < 16.0.5561.1001
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 < 16.0.5561.1001
Microsoft Microsoft SharePoint Server 2019 16.0.0 < 16.0.10417.20175
Microsoft Microsoft SharePoint Server 2019 16.0.0 < 16.0.10417.20175
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 < 16.0.19725.20434
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 < 16.0.19725.20434
Microsoft Microsoft Word 2016 16.0.1 < 16.0.5561.1000
Microsoft Microsoft Word 2016 16.0.1 < 16.0.5561.1000
microsoft 365_apps -
microsoft 365_apps -
microsoft microsoft_365 -
microsoft office_2019 -
microsoft office_2019 -
microsoft office_2021 -
microsoft office_2021 -
microsoft office_2021 -
Showing 30 of 38 entries

References & Advisories (1)

Bug Bounty Relevance

41 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.57%
Raw Score 0.005710
Percentile 47.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00571
2026-10-28
0.00571

Intelligence Sources

mitre ref →