Quick answers
- Is CVE-2026-78513 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-78513 being exploited in the wild.
- How severe is CVE-2026-78513?
- Medium severity, with a CVSS score of 5.5, published 8 September 2026.
- Which products and versions are affected?
- Microsoft PowerPoint.
- Is there a fix for CVE-2026-78513?
- 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-2026-78513 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-78513?
- Check whether you run Microsoft PowerPoint. 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
The vulnerability is an out-of-bounds read flaw in Microsoft Office PowerPoint that allows information disclosure. The vulnerability is triggered when processing malformed or specially crafted PowerPoint files, resulting in the application reading memory beyond its intended boundaries. This requires user interaction (opening a malicious file) and operates with local/file-based attack vectors. A successful exploit could leak sensitive information from the affected process memory. The vulnerability has a CVSS score of 5.5 (medium severity).
Affected products
- Microsoft PowerPoint
Timeline
- 2026-09-08: disclosed
- 2026-09-08: advisory