VDB
CVE-2026-40421
CVE-2026-40421
PUBLISHED
CVSS 4.300000190734863 MEDIUM
External control of file name or path in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
EPSS 0.05% · 16.9th percentile
Risk Scores
CVSS 3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
EPSS Score
0.05%
16.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0, 16.0.0, 16.0.0 |
| microsoft | office_2019 | 19.0.0, 19.0.0, 19.0.0 |
| Microsoft | Microsoft Word 2016 | 16.0.1, 16.0.1, 16.0.1 |
| microsoft | word_2016 | 16.0.1, 16.0.1, 16.0.1 |
| Microsoft | Microsoft Office 2019 | 19.0.0, 19.0.0, 19.0.0 |
| microsoft | office_2021 | 16.0.1, 16.0.1, 16.0.1 |
| microsoft | 365_apps | 16.0.1, 16.0.1, 16.0.1 |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1, 16.0.1, 16.0.1 |
| microsoft | office_2024 | 16.0.0, 16.0.0, 16.0.0 |
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1, 16.0.1, 16.0.1 |
Timeline
- May 12, 2026 CVE Published
- May 12, 2026 PoC Published
- May 12, 2026 PoC Published
- May 13, 2026 PoC Published
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40418 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35440 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40363 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40421 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40367 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40366 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35436 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40361 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40364 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42832 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40359 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40419 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40358 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40420 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41101 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40362 advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42831 advisory
…and 2 more