# CVE-2026-56192: Microsoft Office Out-of-bounds Read Information Disclosure

Source: https://junglewise.ai/threats/cve-2026-56192-microsoft-office-out-of-bounds-read-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-56192 · Severity: medium · CVSS 5.5 · Published 2026-07-14

A vulnerability in Microsoft Office could allow an attacker to access sensitive information on a user's computer. This issue affects common productivity tools like Word, Excel, and PowerPoint, as well as SharePoint servers. To exploit this, an attacker would typically need to trick a user into opening a specially crafted file, potentially leading to the exposure of private data.

Technologies: [Microsoft 365 Apps for Enterprise](https://junglewise.ai/threats/technologies/365-apps-for-enterprise), [Microsoft Office 2016](https://junglewise.ai/threats/technologies/office-2016), [Microsoft Office 2019](https://junglewise.ai/threats/technologies/office-2019), [Microsoft Office 365 for Mac](https://junglewise.ai/threats/technologies/office-365-for-mac), [Microsoft Office LTSC 2021](https://junglewise.ai/threats/technologies/office-ltsc-2021), [Microsoft Office LTSC 2024](https://junglewise.ai/threats/technologies/office-ltsc-2024), [Microsoft SharePoint Enterprise Server 2016](https://junglewise.ai/threats/technologies/sharepoint-enterprise-server-2016). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-56192 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56192 being exploited in the wild.

**How severe is CVE-2026-56192?** Medium severity, with a CVSS score of 5.5, published 14 July 2026.

**Which products and versions are affected?** Microsoft 365 Apps for Enterprise 16.0.1 and later versions prior to security updates; Microsoft Office 2016 16.0.0 to 16.0.5561.1000; Microsoft Office 2019 19.0.0 and later versions prior to security updates; Microsoft Office 365 for Mac 1.0.0 to 16.111.26071215; and 3 more.

**Is there a fix for CVE-2026-56192?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-56192 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-56192?** Check whether you run Microsoft 365 Apps for Enterprise, Microsoft Office 2016, Microsoft Office 2019 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An out-of-bounds read vulnerability (CWE-125) exists in multiple versions of Microsoft Office and SharePoint Server. The flaw is triggered when the application fails to properly validate input while reading from a memory buffer, which can be exploited by an attacker who convinces a user to open a malicious file. While the attack vector is local, it requires no prior privileges (PR:N) but does require user interaction (UI:R). Successful exploitation allows the attacker to read sensitive information from the process memory, potentially bypassing security boundaries. Microsoft has released security updates to address this issue across affected platforms including Windows and macOS.

## Affected products

- Microsoft Microsoft 365 Apps for Enterprise 16.0.1 and later versions prior to security updates
- Microsoft Microsoft Office 2016 16.0.0 to 16.0.5561.1000
- Microsoft Microsoft Office 2019 19.0.0 and later versions prior to security updates
- Microsoft Microsoft Office 365 for Mac 1.0.0 to 16.111.26071215
- Microsoft Microsoft Office LTSC 2021 16.0.1 and later versions prior to security updates
- Microsoft Microsoft Office LTSC 2024 16.0.0 and later versions prior to security updates
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 to 16.0.5561.1001

## Timeline

- 2026-07-14: disclosed
- 2026-07-14: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56192](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56192)

## Related threats

- [Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.](https://junglewise.ai/threats/cve-2026-70310-out-of-bounds-read-in-microsoft-office-word-allows-an)
- [Microsoft SharePoint cross-site scripting vulnerability](https://junglewise.ai/threats/cve-2026-62826-microsoft-sharepoint-cross-site-scripting-vulnerability)
- [Microsoft SharePoint improper authorization privilege escalation](https://junglewise.ai/threats/cve-2026-58277-microsoft-sharepoint-improper-authorization-privilege-escalation)
- [Microsoft Office out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-56195-microsoft-office-out-of-bounds-read-information-disclosure)
- [Microsoft SharePoint improper access control spoofing vulnerability](https://junglewise.ai/threats/cve-2026-56157-microsoft-sharepoint-improper-access-control-spoofing)