Quick answers
- Is CVE-2026-80073 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-80073 being exploited in the wild.
- How severe is CVE-2026-80073?
- Medium severity, with a CVSS score of 6.5, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Office Outlook.
- Is there a fix for CVE-2026-80073?
- 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-2026-80073 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-80073?
- Check whether you run Microsoft Office Outlook. 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
This vulnerability is an out-of-bounds read in Microsoft Office Outlook's memory handling. The flaw permits an unauthorized, remote attacker to read memory outside the intended bounds of a buffer or data structure, leading to information disclosure. The attack vector is network-based and requires no authentication or user interaction. A successful exploit could allow an attacker to extract sensitive data from the affected system. Microsoft has released security patches through its regular update channels to remediate this issue.
Affected products
- Microsoft Office Outlook
Timeline
- 2026-09-08: disclosed