CVE-2026-44817
HIGH EPSS 29.0%
Published Jun 9, 20263w ago · Modified Jun 19, 20261w ago
7.8 CVSS 3.1
Published Jun 9, 2026 3w ago
Last Modified Jun 19, 2026 1w ago
Description
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
29.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-843
Affected Products 14
| Vendor | Product | Version | Range |
|---|---|---|---|
| microsoft | 365_apps | * | any |
| microsoft | 365_apps | * | any |
| microsoft | excel | 2016 | any |
| microsoft | excel | 2016 | any |
| microsoft | microsoft_365 | * | any |
| microsoft | office_2019 | * | any |
| microsoft | office_2019 | * | any |
| microsoft | office_2021 | * | any |
| microsoft | office_2021 | * | any |
| microsoft | office_2021 | * | any |
| microsoft | office_2024 | * | any |
| microsoft | office_2024 | * | any |
| microsoft | office_2024 | * | any |
| microsoft | office_online_server | * | any |
References 1
- msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44817
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.