CVE-2026-40358CWE-416
Microsoft Office Remote Code Execution Vulnerability
High · published May 12, 2026
What it is
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
The record
Technical detail
- CVSS v3.1
- 8.4 · HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- CVSS v4.0
- Not supplied
- EPSS
- 0.00364 · 29.1th percentile
- Weakness
- CWE-416 · Use After Free
- Published
- 2026-05-12T16:59Z
EPSS history
Timeline