CVE-2026-44821

CVE-2026-44821

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

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-44821?: CVE-2026-44821 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-06-09.
How severe is CVE-2026-44821?: Medium severity. CVSS v3 base score is 5.5 out of 10.