Dashboard / CVE-2026-70311

CVE-2026-70311

HIGH
MEDIUM Priority: 0.04 BB Relevance: 41/100
Published: 2026-08-11 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 (29)

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 < 16.112.26081010
Microsoft Microsoft Office 365 for Mac 1.0.0 < 16.112.26081010
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 < 16.112.26081010
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 < 16.112.26081010
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.112.26081010
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 < 16.112.26081010
Microsoft Microsoft Word 2016 16.0.1 < 16.0.5565.1000
Microsoft Microsoft Word 2016 16.0.1 < 16.0.5565.1000
microsoft 365_apps -
microsoft 365_apps -
microsoft microsoft_365 -
microsoft office_2019 -
microsoft office_2019 -
microsoft office_2021 -
microsoft office_2021 -
microsoft office_2021 -
microsoft office_2024 -
microsoft office_2024 -
microsoft office_2024 -
microsoft word 2016
microsoft word 2016

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

0.47%
Raw Score 0.004660
Percentile 40.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00466
2026-10-28
0.00466

Intelligence Sources

mitre ref →

External Links