Vulnerability · Published Jul 14, 2026 · Assigned by microsoft
CVE-2026-57084Windows File Explorer Information Disclosure Vulnerability
Medium 5.5
In plain English
A medium-severity security flaw in Microsoft Office 365 for Mac from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.5%top 54.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use of uninitialized resource in Windows File Explorer allows an unauthorized attacker to disclose information locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Office 365 for Mac | 1.0.0 – before 16.112.26090911 |
| Microsoft | Microsoft Office for Android | 16.0.1 – before 16.0.20430.20000 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 – before 16.112.26090911 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 – before 16.112.26090911 |
Weakness: CWE-908 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Windows File Explorer Information Disclosure Vulnerability vendor-advisory, patch