What is CVE-2023-35619?

CVE-2023-35619 is a medium-severity vulnerability in Microsoft Office Ltsc For Mac 2021, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2023-12-12.

How severe is CVE-2023-35619?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Microsoft Office Ltsc For Mac 2021

CVE-2023-35619

Microsoft Outlook for Mac Spoofing Vulnerability

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2023-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (66.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
Microsoft Office Long Term Servicing Channel — versions 2021

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35619 (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-35619?: CVE-2023-35619 is a medium-severity vulnerability in Microsoft Office Ltsc For Mac 2021, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2023-12-12.
How severe is CVE-2023-35619?: Medium severity. CVSS v3 base score is 5.3 out of 10.