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CVE-2026-21260 is a high severity vulnerability with a CVSS score of 7.5. No known exploits currently, and patches are available.
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Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
| Vendor | Product |
|---|---|
| Microsoft | Outlook |
| Microsoft | Sharepoint Server |
| Microsoft | Office |
| Microsoft | Office Long Term Servicing Channel |
| Microsoft | 365 Apps |