Quick answers
- Is CVE-2026-69477 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-69477 being exploited in the wild.
- How severe is CVE-2026-69477?
- High severity, with a CVSS score of 7.3, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Office Access.
- Is there a fix for CVE-2026-69477?
- 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-2026-69477 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-69477?
- 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 heap-based buffer overflow exists in Microsoft Office Access due to improper bounds checking in a memory operation. The vulnerability requires an authorized user with local access to trigger the overflow, likely by opening a specially crafted Access file. Successful exploitation allows execution of arbitrary code with the privileges of the user running Access. Microsoft has released security patches to address this issue.
Affected products
- Microsoft Office Access
Timeline
- 2026-09-08: disclosed