CVE-2026-45463CWE-121CWE-191
Microsoft Office Remote Code Execution Vulnerability
High · published June 9, 2026
What it is
Integer underflow (wrap or wraparound) 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
- Weaknesses
- CWE-121 · Stack-based Buffer Overflow; CWE-191 · Integer Underflow (Wrap or Wraparound)
- Published
- 2026-06-09T17:05Z
EPSS history
Timeline