CVE-2026-50665

33

FAUCET Score

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

First published: Jul 14, 2026Last modified: Jul 14, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:365_apps:-::::enterprise::x64:*
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:365_apps:-::::enterprise::x86:*
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:microsoft_365:-:::::macos::
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:office_2016:-::::-::x64:*
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:office_2016:-::::-::x86:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

1.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.35%

Probability of exploitation in next 30 days

EPSS Percentile

27.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-26

Model: v2026.06.15

This CVE's current EPSS score of 0.0035 is in the 26th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (14)

microsoftpatch availablevia msrc

Product: Microsoft 365 Apps for Enterprise for 64-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office 2019 for 32-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office 2019 for 64-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft 365 Apps for Enterprise for 32-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC 2021 for 64-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC 2021 for 32-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC 2024 for 32-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC 2024 for 64-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC for Mac 2021Fixed in: 16.111.26071215

microsoftpatch availablevia msrc

Product: Microsoft Office LTSC for Mac 2024Fixed in: 16.111.26071215

microsoftpatch availablevia msrc

Product: Microsoft Office 2016 (32-bit edition)Fixed in: 16.0.5561.1000

microsoftpatch availablevia nvd_reference

microsoftpatch availablevia msrc

Product: Microsoft Office 2016 (64-bit edition)Fixed in: 16.0.5561.1000

microsoftpatch availablevia msrc

Product: Microsoft Office 365 for MacFixed in: 16.111.26071215

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-50665Important

Microsoft Office Information Disclosure Vulnerability

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-50665

PatchVendor Advisory