CVE-2026-55041CWE-122
Microsoft Excel Remote Code Execution Vulnerability
High · published July 14, 2026
What it is
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
The record
Technical detail
- CVSS v3.1
- 7.8 · HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- CVSS v4.0
- Not supplied
- EPSS
- 0.00466 · 39.4th percentile
- Weakness
- CWE-122 · Heap-based Buffer Overflow
- Published
- 2026-07-14T17:08Z
EPSS history
Timeline