Microsoft Office OneNote Remote Code Execution Vulnerability
CVE-2026-102858 is a remote code execution vulnerability in Microsoft Office OneNote (rated Important, CVSS 8.8).
1 version
Facts
- Microsoft id
CVE-2026-102858- Products
- Microsoft Office OneNote
- Severity
- Important
- Impact
- Remote Code Execution
- CVSS
- 8.8
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Unlikely
- Customer action required
- Yes
- Release
- 2026-Oct
- Assigned by
- Microsoft
- Weakness
- CWE-122: Heap-based Buffer Overflow
- MSRC revision
- 1.1
- First captured by us
- (from our first import of this list)
- Microsoft last modified
- Source
- Security updates · open the original at Microsoft
Microsoft's revision notes
- Revision 1.0, 2026-10-13:
Information published.
- Revision 1.1, 2026-10-15:
Microsoft is announcing the availability of the security updates for Microsoft Office for Mac.
Microsoft says
Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.
What Microsoft changed
One version so far. If Microsoft edits it, each change shows here with what was removed and added.
First version we captured ·
The text as we first saw it
Seen by us · Microsoft's timestamp · Microsoft's page
Related changes
Mentioning the same Microsoft ids
Last updated