Quick answers
- Is CVE-2026-64919 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-64919 being exploited in the wild.
- How severe is CVE-2026-64919?
- High severity, with a CVSS score of 7.8, published 11 August 2026.
- Which products and versions are affected?
- Microsoft Office Access.
- Is there a fix for CVE-2026-64919?
- 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-2026-64919 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-64919?
- Check whether you run Microsoft Office Access. 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
A stack-based buffer overflow vulnerability exists in Microsoft Office Access that can be triggered through specially crafted input. The vulnerability requires local access to the affected system and the ability to open a malicious file with Access. Successful exploitation allows arbitrary code execution in the context of the user running the application. The CVSS score of 7.8 reflects high severity; however, the attack vector is local, limiting widespread remote exploitation risk. Patches are expected to be available from Microsoft.
Affected products
- Microsoft Office Access
Timeline
- 2026-08-11: disclosed