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CVE-2023-29344

20
FAUCET Score

CVE-2023-29344 is a high-severity Remote Code Execution (RCE) vulnerability affecting Microsoft Office, Microsoft 365 Apps, and Microsoft Office LTSC. This vulnerability, with a CVSS score of 7.8, can be exploited through user interaction (e.g., opening a malicious document) and could lead to complete compromise of confidentiality, integrity, and availability. While not currently listed on the KEV catalog or Hot List, and with no public exploit code available (Metasploit, Nuclei, ExploitDB), it has garnered significant community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:*
2021CPE matchmatch criteria
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*

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
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 54th percentile among its peer group of 11,621 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (5)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office 2019 for MacFixed in: 16.73.23051401
View patch
microsoftpatch availablevia msrc
Product: Microsoft Office LTSC for Mac 2021Fixed in: 16.73.23051401
View patch
microsoftpatch availablevia msrc
Product: Microsoft 365 Apps for Enterprise for 32-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases
microsoftpatch availablevia msrc
Product: Microsoft 365 Apps for Enterprise for 64-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases

Vendor Advisories (1)

microsoft2023-May/CVE-2023-29344Important

Microsoft Office Remote Code Execution Vulnerability

May 9, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-29344
PatchVendor Advisory