VulnerabilityAnalyzed
CVE-2026-48582
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
CRITICAL 9.6EPSS 0.69%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
- CVSS 3.1
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- EPSS
- 0.69% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- microsoft/exchange online
- Source
- secure@microsoft.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.