CVE-2026-88203: Microsoft Office PowerPoint Information Disclosure Vulnerability
Overview
- Severity
- Medium (CVSS 6.5)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
- Category
- Information Disclosure
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2026-Oct
- Released
- 2026-10-13
Description
Untrusted pointer dereference in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
FAQ
Is the Preview Pane an attack vector for this vulnerability?
Yes, the Preview Pane is an attack vector.
What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.
Affected Products (6)
Microsoft Office
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft 365 Apps for Enterprise for 32-bit Systems
Acknowledgments
<a href="https://www.linkedin.com/in/jaemin-kim-b99503278/">Jmini</a>, boolgombear
Revision History
- 2026-10-13: Information published.