# CVE-2015-1770: Microsoft Office Uninitialized Memory Use Vulnerability

Source: https://junglewise.ai/threats/cve-2015-1770-microsoft-office-uninitialized-memory-use-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-28. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2015-1770 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2022-03-28

Microsoft Office 2013 and 2013 RT SP1 are vulnerable to remote code execution due to uninitialized memory use when processing crafted Office documents. An attacker can exploit this by convincing a user to open a malicious file, potentially leading to full system compromise.

Technologies: [Microsoft Office](https://junglewise.ai/threats/technologies/office). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2015-1770 exploited in the wild?** Yes. CVE-2015-1770 is known to be exploited in the wild, first recorded on 28 March 2022. Treat it as urgent.

**How severe is CVE-2015-1770?** Critical severity, with a CVSS score of 8.8, published 28 March 2022.

**Which products and versions are affected?** Microsoft Office 2013 SP1; Microsoft Office 2013 RT SP1.

**Is there a fix for CVE-2015-1770?** A patch was published on 2015-06-09: Microsoft released security bulletin MS15-059 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2015-1770 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2015-1770?** Check whether you run Microsoft Office. 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.

## Affected products

- Microsoft Office 2013 SP1
- Microsoft Office 2013 RT SP1

## Timeline

- 2015-06-09: disclosed: NVD Published Date
- 2015-06-09: patched: Microsoft released security bulletin MS15-059
- 2022-03-28: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [Microsoft Office Outlook user warning spoofing vulnerability](https://junglewise.ai/threats/cve-2026-124194-microsoft-office-outlook-missing-user-interaction-for)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-122198-heap-based-buffer-overflow-in-microsoft-office-allows-an)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120003-heap-based-buffer-overflow-in-microsoft-office-allows-an)
- [Microsoft Office UI security feature bypass](https://junglewise.ai/threats/cve-2026-119998-product-ui-does-not-warn-user-of-unsafe-actions-in-microsoft)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116717-heap-based-buffer-overflow-in-microsoft-office-allows-an)