CVE-2026-40363
High
Published: 12 May 2026
Published
12 May 2026
Modified
12 May 2026
KEV Added
—
Patch
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CVSS Score
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
N/A
Risk Priority
17
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2026-40363 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability. Its CVSS base score is 8.4 (High).
Operationally, it is not currently listed in the CISA KEV catalog.
NVD Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Deeper analysisAI
Automated synthesis unavailable for this CVE.
Details
- CWE(s)