What is CVE-2026-62882?

CVE-2026-62882 is a medium-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Insufficiently Protected Credentials. CVSS score: 4.3/10. Published 2026-08-11.

How severe is CVE-2026-62882?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Microsoft 365 Apps For Enterprise

CVE-2026-62882

Insufficiently protected credentials in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Microsoft 365 Apps For Enterprise — versions 16.0.1
Microsoft Office 2019 — versions 19.0.0
Microsoft Office Ltsc 2021 — versions 16.0.1
Microsoft Office Ltsc 2024 — versions 16.0.0
Microsoft Outlook 2016 — versions 16.0.0.0

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-62882?: CVE-2026-62882 is a medium-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Insufficiently Protected Credentials. CVSS score: 4.3/10. Published 2026-08-11.
How severe is CVE-2026-62882?: Medium severity. CVSS v3 base score is 4.3 out of 10.