Microsoft Office Remote Code Execution Vulnerability
CVE-2026-63515 is a remote code execution vulnerability in Microsoft Office (rated Critical, CVSS 7.8).
1 version
Facts
- Microsoft id
CVE-2026-63515- Products
- Microsoft Office
- Severity
- Critical
- Impact
- Remote Code Execution
- CVSS
- 7.8
- CVSS vector
- CVSS:3.1/AV:L/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 Less Likely
- Customer action required
- Yes
- Release
- 2026-Aug
- Assigned by
- Microsoft
- Weakness
- CWE-125: Out-of-bounds Read, CWE-191: Integer Underflow (Wrap or Wraparound)
- MSRC revision
- 1.0
- Status pages
- Microsoft 365 apps status
- 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, 2026-08-11:
Information published.
Microsoft says
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally. Is the Preview Pane an attack vector for this vulnerability?
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
Other changes for Microsoft 365 apps
- Microsoft Office Word Remote Code Execution Vulnerability
- Microsoft Office Word Remote Code Execution Vulnerability
- Microsoft Office Excel Information Disclosure Vulnerability
- Microsoft Office Excel Remote Code Execution Vulnerability
- Microsoft Office Excel Remote Code Execution Vulnerability
- Microsoft Office Word Remote Code Execution Vulnerability
- Microsoft Office Word Remote Code Execution Vulnerability
- Microsoft Office Remote Code Execution Vulnerability
Last updated