Vulnerability · Published Sep 8, 2026 · Assigned by microsoft
CVE-2026-69609Win32k Information Disclosure Vulnerability
Medium 5.5
In plain English
A medium-severity out-of-bounds read 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 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 65.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds read in Windows Win32K allows an authorized 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-125, CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Win32k Information Disclosure Vulnerability vendor-advisory, patch