high7.8
CVE-2026-20955
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Impact
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | 365 Apps | All versions |
| Microsoft | Office | Version 2019 |
| Microsoft | Office Long Term Servicing Channel | Versions 2021, 2024 |
| Microsoft | Office Online Server | before 16.0.10417.20083 |